How To Reheat Sandwich In Microwave [COMPLETE GUIDE]

Enjoying a delicious sandwich can be a delightful experience, but what if you have some leftovers and want to reheat them for another satisfying meal? The microwave is a convenient and popular appliance for reheating various dishes, including sandwiches. However, reheating a sandwich in the microwave requires some careful considerations to ensure that it maintains its texture, flavor, and overall appeal.

In this comprehensive guide, we will delve into the best practices for reheating a sandwich in the microwave. We will explore the appropriate power levels, cooking times, and essential tips to achieve the perfect reheated sandwich. Additionally, we will address situations when it may not be advisable to use the microwave for reheating sandwiches. Whether you’re craving a classic grilled cheese, a hearty turkey club, or a flavorful veggie wrap, this guide will equip you with the knowledge and techniques to reheat your favorite sandwich to perfection.

Contents

Quick Answer: How To Reheat Sandwich In Microwave

Step 1: Preparation

Before reheating your sandwich, it’s essential to ensure that it is suitable for microwave reheating. Remove any ingredients that can be affected by microwave heating, such as lettuce, tomato slices, or delicate dressings. Place the sandwich on a microwave-safe plate or dish that allows for even heating.

Step 2: Adjust Power Level

Set the microwave to a medium power level to gradually reheat the sandwich without causing the bread to become rubbery or the fillings to overcook. A power level of 50-70% is generally suitable for reheating sandwiches, but this can be adjusted based on the wattage of your microwave.

Step 3: Reheating Time

Reheating time can vary depending on the type and size of the sandwich. Start with a conservative time, such as 30-45 seconds, and then check the sandwich for doneness. If necessary, continue reheating in short intervals until the desired temperature is reached.

Step 4: Let It Stand

Allow the reheated sandwich to stand for a brief period after microwaving to allow for even heat distribution and to prevent excessively hot spots. This standing time will also help the flavors and textures to meld together for a satisfying eating experience.

By following these simple steps, you can efficiently and effectively reheat your sandwich in the microwave, ensuring that it is delicious and thoroughly heated without compromising its quality.

When Not To Reheat Sandwich In Microwave

While the microwave is a versatile appliance for reheating many types of food, there are certain circumstances when using it to reheat a sandwich may not be ideal. It’s important to be mindful of these situations to preserve the integrity and flavor of the sandwich. Here are some scenarios when it is best to avoid reheating a sandwich in the microwave:

Delicate And Moist Fillings

If your sandwich contains delicate fillings such as fresh lettuce, juicy tomato slices, or moist sauces, these components can quickly become soggy or lose their texture when reheated in the microwave. In such cases, it may be preferable to remove these ingredients before reheating and add them back to the sandwich after reheating to maintain their freshness and appeal.

Crispy Ingredients

Sandwiches that feature crispy elements, such as bacon, fried chicken, or breaded items, can lose their crispiness when reheated in the microwave. The microwave’s moisture can soften these crispy components, detracting from the sandwich’s desired texture. Consider utilizing alternative methods such as a toaster oven or stovetop to reheat the sandwich while preserving its crispy elements.

Specialty Breads

Artisanal or specialty breads, such as ciabatta, baguette, or focaccia, can have unique textures and crusts that may be adversely affected by microwave reheating. These bread varieties may become tough or chewy when exposed to microwave heating. To maintain the integrity of specialty bread, consider using a different reheating method, such as oven baking or pan toasting.

High Moisture Content

Sandwiches with high-moisture fillings, such as those containing a significant amount of sauce, gravy, or creamy spreads, can present challenges when reheated in the microwave. The excessive moisture can result in a soggy texture and may cause the bread to become overly soft. Alternative methods, such as gentle stovetop warming or oven reheating, may be more suitable for preserving the sandwich’s texture and flavor.

By recognizing these scenarios, you can make informed decisions about whether to reheat your sandwich in the microwave or consider alternative reheating methods to maintain its quality and deliciousness.

Power Level To Reheat Sandwich In Microwave

Selecting the appropriate power level is crucial to successfully reheating a sandwich in the microwave. The power level determines the intensity of the microwave’s heat, and choosing the right setting can help prevent the sandwich from becoming overcooked, rubbery, or unevenly heated. Here’s a closer look at the recommended power levels for reheating sandwiches in the microwave:

Medium Power (50-70%)

A medium power level, typically ranging from 50% to 70%, is well-suited for reheating sandwiches in the microwave. This setting provides a balance between gentle, even heating and a reasonable speed of reheating. It allows the fillings and bread to gradually warm up without causing excessive moisture loss or unwanted texture changes.

Adjusting Based On Microwave Wattage

The wattage of your microwave can influence the appropriate power level for reheating sandwiches. Higher-wattage microwaves can deliver more intense heat at lower power settings, while lower-wattage microwaves may require slightly higher power levels for effective reheating. Refer to your microwave’s manual or settings panel to determine the appropriate power level based on its wattage.

Considering Sandwich Composition

The composition of the sandwich, including the types of fillings and bread used, can also influence the choice of power level. Sandwiches with denser, heartier fillings may benefit from a slightly higher power level to ensure thorough heating, while sandwiches with delicate components may require a lower power setting to prevent overcooking.

By carefully considering the power level and its relationship to microwave wattage and sandwich composition, you can optimize the reheating process to achieve a perfectly warmed sandwich with ideal texture and flavor.

Cooking Time To Reheat Sandwich In Microwave

Determining the appropriate cooking time for reheating a sandwich in the microwave involves gauging the sandwich’s size, composition, and its initial temperature. By following a few guidelines and utilizing careful observation, you can achieve an evenly reheated sandwich without the risk of excessive heating or uneven temperature distribution. Here are some considerations for determining the cooking time to reheat a sandwich in the microwave:

Initial Temperature

If the sandwich has been refrigerated and is cold to the touch, it will require a longer reheating time to reach the desired serving temperature. Conversely, if the sandwich is at room temperature or slightly chilled, it will require less time to be adequately reheated.

Size And Thickness

The size and thickness of the sandwich are important factors in determining the cooking time. A larger, thicker sandwich will naturally require a longer reheating duration to ensure that the fillings and bread are fully heated throughout. Conversely, smaller or thinner sandwiches will heat more quickly.

Check For Doneness

To prevent overcooking, it’s essential to check the sandwich for doneness at intervals during the reheating process. Start with a conservative cooking time, such as 30-45 seconds, and assess the sandwich’s temperature and texture. If necessary, continue reheating in short intervals of 15-20 seconds until the sandwich reaches the desired warmth.

Standing Time

Allowing the reheated sandwich to stand in the microwave after the cooking process facilitates even heat distribution and minimizes the risk of hot spots. This brief standing time also allows the sandwich to achieve a consistent temperature internally, ensuring a pleasurable eating experience.

By factoring in the initial temperature, size, thickness of the sandwich, and utilizing careful observation and adjustment, you can confidently determine the ideal cooking time to reheat your sandwich in the microwave, resulting in a thoroughly warmed and appetizing meal.

Reheating a sandwich in the microwave can be a convenient and efficient way to enjoy your favorite meal all over again. By following the recommended techniques and considerations outlined in this comprehensive guide, you can achieve optimal results when reheating a variety of sandwiches. From adjusting the power level to determining the cooking time and recognizing when it may be prudent to avoid microwave reheating, these insights will empower you to preserve the qualities and appeal of your sandwiches.

Whether you're savoring a classic club sandwich, a savory panini, or a delectable veggie wrap, the microwave can be a valuable tool for reheating, provided that you apply the appropriate methods and considerations. With careful attention to detail and an understanding of the factors that influence the reheating process, you can consistently enjoy delicious, well-warmed sandwiches that retain their original qualities and flavors.

Remember to customize the reheating process based on the specific characteristics of your sandwiches, and don't hesitate to explore alternative reheating methods when warranted. With this knowledge at your disposal, you can confidently embark on the reheating journey, knowing that a satisfying and reheated sandwich is within reach.

How To Reheat Sandwich In Microwave

Microwaves have become a common appliance in most households today due to their convenience and efficiency in reheating food. Reheating a sandwich in the microwave is an easy and quick way to enjoy a warm and delicious meal. However, it is essential to know the correct technique to ensure that your sandwich retains its flavors, textures, and overall integrity.

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Reheating a sandwich in the microwave is a straightforward process, but following a few tips will help you achieve the best results. Here is a step-by-step guide:

Step 1: Prepare the sandwich: Start by removing any cold sauces or spreads from the sandwich, such as mayo or mustard. These can lose their texture and become unpleasant when reheated. Place the sandwich on a microwave-safe plate or dish.

Step 2: Cover with a microwave-safe lid or microwave-safe paper towel: Covering the sandwich helps to create a moist environment, preventing it from drying out during the reheating process. It also helps to distribute the heat evenly.

Step 3: Set the microwave power level: Use the microwave’s power level function to adjust the heat intensity. Reheating at a lower power level prevents the sandwich from overheating and becoming soggy. Generally, using 50-70% power is recommended for reheating sandwiches.

Step 4: Reheat in intervals: Instead of reheating the sandwich all at once, it is advisable to use shorter intervals to avoid overcooking. Start by reheating the sandwich for 20 to 30 seconds, then check for desired warmth. Repeat this process until the sandwich reaches the desired temperature.

Step 5: Check for readiness: After each reheating interval, open the microwave and check the sandwich’s temperature. Use a meat thermometer if possible to ensure the internal temperature reaches at least 165°F (74°C), which is the minimum safe temperature for reheating cooked food.

Step 6: Rest before serving: Once the sandwich is heated to your satisfaction, allow it to rest for a few moments. This will help the heat distribute evenly and prevent accidental burns when handling the sandwich.

Step 7: Serve and enjoy: Remove the sandwich from the microwave, and if desired, add any cold sauces or spreads that were removed earlier. Serve the reheated sandwich immediately while it is still warm and delicious.

Reheating a sandwich in the microwave is a quick and efficient process, allowing you to enjoy your meal in a matter of minutes. However, it is important to consider whether using a microwave is the best method for reheating your sandwich.

Should I Reheat Sandwich In Microwave

While the microwave is a popular choice for reheating sandwiches, it may not always be the best option. Here are some factors to consider:

  1. Texture: Microwaving can sometimes result in a softer texture for the bread. If you prefer a crispy or toasted texture, using a toaster oven or oven may be a better choice.

  2. Fillings: Some fillings, such as lettuce, tomato slices, or delicate greens, may become wilted or lose their crispness when reheated in the microwave. If your sandwich contains these ingredients, consider removing them before reheating and adding them back afterward.

  3. Flavors: Microwaving may alter the flavors of some sandwich fillings. For example, cheese may become overly melted and lose its desired texture. It is important to consider how the reheating process may affect the flavor of your sandwich.

  4. Convenience: Microwaving is a quick and convenient method for reheating sandwiches, especially if you are in a rush or have limited time. However, if you have the luxury of time and prefer a different texture or flavor, other methods may be more suitable.

Ultimately, the decision to reheat your sandwich in the microwave depends on personal preference and the sandwich’s specific ingredients. If you prioritize convenience and speed, the microwave is an excellent choice. However, if texture, flavors, or specific ingredients are crucial to you, exploring alternative reheating methods may yield better results.

Reheating Sandwich Without Microwave

If you do not have access to a microwave or prefer not to use one, there are alternative methods for reheating your sandwich. Here are a few options to consider:

  1. Toaster Oven: A toaster oven is a versatile appliance that can be used to reheat sandwiches effectively. Preheat the toaster oven to around 350°F (175°C). Remove any cold sauces or spreads from the sandwich and place it directly on the toaster oven rack or a baking sheet lined with parchment paper. Reheat the sandwich for approximately 5-10 minutes or until it reaches the desired temperature. Keep a close eye on it to avoid burning.

  2. Oven: If you don’t have a toaster oven, a conventional oven can also be used to reheat your sandwich. Preheat the oven to 350°F (175°C). Remove any cold sauces or spreads and place the sandwich on a baking sheet lined with parchment paper. Reheat for approximately 10-15 minutes or until the sandwich is heated through. Again, monitor it closely to prevent overcooking.

  3. Stovetop: You can also reheat a sandwich on the stovetop using a skillet or griddle. Preheat the skillet or griddle over medium heat. Remove any cold sauces or spreads and place the sandwich on the heated surface. Cook for a few minutes on each side until warmed through. This method allows for more control over the texture and helps to retain crispy or toasted qualities.

  4. Panini press: If you have a panini press or a sandwich press, this can be an excellent option for reheating your sandwich. Preheat the press and remove any cold sauces or spreads. Place the sandwich inside the press and close it, applying gentle pressure. Allow it to warm for a few minutes until the desired temperature is reached. This method can help retain the sandwich’s original texture and create those desirable grill marks.

Using these alternative reheating methods can help preserve the texture, flavors, and overall quality of your sandwich, especially if you have specific preferences or ingredients that may not fare well in the microwave.

What Reheating In Microwave Does To The Sandwich

While reheating a sandwich in the microwave is convenient and quick, it is important to understand how the microwave affects the sandwich’s texture, flavors, and overall quality. Here are some potential effects:

  1. Texture: Microwaving can result in a softer and less crispy texture, particularly for bread. This is because the moisture in the sandwich is heated rapidly, often leading to a slightly soggy or rubbery texture. If you prefer a crispy or toasted texture, alternative reheating methods, like using a toaster oven or stovetop, may be more suitable.

  2. Fillings: The microwave’s heat can cause certain fillings to become soggy or lose their desired texture. Ingredients such as lettuce, tomatoes, or delicate greens may wilt or become limp when reheated in the microwave. If your sandwich contains these ingredients, consider removing them before reheating and adding them back after the reheating process.

  3. Flavors: Microwaving can impact the flavors of some sandwich fillings. For example, cheese may become excessively melted and lose its desired texture. On the other hand, certain seasonings or spices may become less pronounced or distributed unevenly. It is important to consider how the reheating process may affect the flavor profile of your sandwich.

  4. Uneven heating: Microwaves can sometimes heat food unevenly, resulting in hot and cold spots. To ensure even heating, using a rotating plate or turning the sandwich halfway through the reheating process can help distribute the heat more evenly and prevent certain areas from becoming overly heated.

  5. Potential for drying out: Overheating a sandwich in the microwave can cause it to dry out, particularly if it lacks moisture or contains excessive bread. To prevent this, using shorter reheating intervals and covering the sandwich with a microwave-safe lid or paper towel can help retain moisture and minimize drying.

It is essential to note that the effects of microwaving on a sandwich can vary depending on ingredients, cooking time, and personal preferences. While reheating in the microwave is quick and convenient, if you prioritize specific textures, flavors, or ingredient integrity, exploring alternative reheating methods may yield more desirable results.

Reheating a sandwich in the microwave is a convenient and efficient way to enjoy a warm and delicious meal. By following the steps outlined in this article, you can achieve the best results when reheating your sandwich. However, it is essential to consider the potential effects that microwaving may have on the sandwich’s texture, flavors, and overall quality. If you prioritize specific textures, flavors, or want to avoid potential drawbacks associated with microwaving, alternative reheating methods like using a toaster oven, oven, stovetop, or panini press may be more suitable options. Ultimately, the choice of reheating method depends on personal preference, time constraints, and desired outcomes. Experimenting with different methods will help you find the best way to enjoy a reheated sandwich that meets your expectations.

Can You Restore The Initial Quality Of A Sandwich?

We’ve all been in situations where we have leftover sandwiches that we want to enjoy at a later time. Whether it’s a delicious BLT, a mouthwatering turkey club, or a classic grilled cheese, reheating these sandwiches properly is key to restoring their initial quality and flavors. One common method to reheat a sandwich is by using a microwave.

The initial quality of a sandwich comprises of several factors including its taste, texture, and overall appeal. While reheating a sandwich in a microwave may not fully replicate the freshly made version, it can still yield satisfactory results if done correctly. However, it is important to note that certain factors such as the type of sandwich filling and the quality of the bread may affect the final outcome. For instance, microwave reheating may cause some bread varieties to become soggy or less crisp, and the texture of certain fillings may be altered.

Nevertheless, by following the right techniques and making a few adjustments, you can still enjoy a reheated sandwich that comes surprisingly close to its initial quality.

Tips For Optimal Reheating Results

To achieve the best possible outcome when reheating a sandwich in a microwave, consider the following tips:

1. Choose The Right Container

Selecting an appropriate container for reheating your sandwich can make a significant difference. Opt for a microwave-safe plate or dish that is large enough to accommodate the sandwich without crowding. Avoid containers made of materials like metal or plastic that are not safe for microwave use.

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2. Reassemble The Sandwich Properly

Before reheating, carefully reassemble the sandwich to ensure that it retains its structural integrity. This means placing the ingredients back into their original order and arrangement. Pay attention to the layers of ingredients, such as spreading condiments or sauces on the bread, and placing delicate ingredients like lettuce or tomatoes between sturdier elements to prevent them from becoming excessively wilted or mushy.

3. Avoid Microwaving For Too Long

Microwaves heat food differently than conventional ovens, and excessive heating can result in dry or rubbery sandwich components. Start by reheating the sandwich for brief intervals, such as 30 seconds at a time, to prevent overcooking. Check the sandwich after each interval and continue heating until it reaches the desired temperature.

4. Use A Microwave-safe Cover

To prevent excessive moisture loss and ensure even reheating, cover the sandwich with a microwave-safe cover or a microwave-safe paper towel. This will help trap the steam generated during reheating, helping to keep the sandwich moist. Be sure to leave a small vent for the steam to escape, as this will prevent condensation from forming and making the bread soggy.

5. Utilize Power Levels

Most microwaves offer multiple power levels that can be adjusted according to the type of food being reheated. Experiment with different power levels to find the one that works best for your sandwich. Lower power levels can ensure more even reheating and prevent the bread from becoming too dry or chewy.

6. Flip The Sandwich

To ensure even heating, consider flipping the sandwich halfway through the reheating process. By flipping the sandwich, you allow both sides to heat evenly, reducing any potential for one side to become overly crispy or dry.

7. Add Moisture As Needed

Some ingredients, like meats or certain types of cheese, may dry out during reheating. Avoid a dry sandwich by adding small amounts of moisture. This can be done by placing a damp paper towel on top of the sandwich or adding moisture-rich ingredients such as a slice of tomato or a dollop of sauce directly into the sandwich. Just be mindful not to add too much moisture, as this may result in a soggy final product.

8. Finishing Touches

Once reheated, consider adding any finishing touches that will enhance the overall taste and texture of your sandwich. This could include adding fresh lettuce or tomato slices, a drizzle of olive oil, or a sprinkling of herbs. These small additions can elevate the visual appeal and taste of the sandwich, bringing it closer to its initial quality.

Can You Reheat A Sandwich More Than Once?

While it is possible to reheat a sandwich more than once, it is generally recommended to reheat it only once to preserve its quality. Repeated reheating can lead to drying out of the ingredients, loss of texture, and potentially increase the risk of microbial growth.

To minimize the need for reheating leftovers multiple times, it is advisable to store sandwiches properly in an airtight container or wrap them tightly in aluminum foil. This helps to maintain their freshness and prevents the need for frequent reheating.

Reheating a sandwich in a microwave can be a convenient and quick way to enjoy a delicious meal. While it may not fully replicate the initial quality of a freshly made sandwich, following the tips and techniques discussed can help you achieve satisfactory results. Remember to choose the right container, reassemble the sandwich properly, adjust the microwave power levels, and consider adding moisture as needed. By taking these precautions and being mindful of the type of sandwich you are reheating, you can enjoy a reheated sandwich that comes close to the original in taste, texture, and overall appeal.

Safety Measures When Reheating Sandwich

Sandwiches are a quick and easy meal that can be eaten at any time of the day. If you’ve made a sandwich ahead of time and would like to reheat it, a microwave is a great tool to use. However, reheating food in the microwave can sometimes lead to soggy, overcooked or unevenly heated meals.

When reheating sandwich in the microwave, there are some safety measures that must be followed to avoid foodborne illnesses. Below are some safety tips to follow:

1. Use A Microwave-Safe Plate

Never reheat your sandwich on a paper towel, waxed paper, or newspaper. These materials can catch fire in the microwave, leading to a dangerous situation. Instead, use a microwave-safe plate or dish that you can cover with a lid or microwave-safe plastic wrap.

2. Reheat Sandwiches To The Appropriate Temperature

To avoid food poisoning, it is essential to ensure that your sandwich is heated up to the proper temperature. The appropriate temperature is one that reaches at least 165°F or 74°C, which is the temperature that kills most bacteria and viruses in food. Use a food thermometer to measure the temperature of your sandwich before eating.

3. Handle Food Safely

Before reheating your sandwich, ensure that you handle it safely. This means washing your hands thoroughly with soap and water before preparing your sandwich. Also, ensure that you use the right ingredients and store them at the right temperature to avoid contamination.

Avoiding Common Mistakes In Microwave Reheating

There are common mistakes that people make when it comes to reheating sandwiches in the microwave. Below are some of the mistakes to avoid:

1. Reheating For Too Long

One of the significant mistakes that people make when reheating sandwiches in the microwave is overheating them. If you leave your sandwich in the microwave for an extended period, it might become too dry and lose its flavor or texture. Also, heating it for too short a time can cause the sandwich to remain cold in the middle. Depending on the power of your microwave and the type of sandwich, it would be best to reheat for 30-45 seconds, flip it over, and reheat for another 30-45 seconds.

2. Heating At Full Power

When reheating a sandwich, always use a lower power setting on the microwave. Heating the sandwich at full power leads to uneven heating, sogginess or it might get overcooked. Instead, use a 50% power setting and heat for short durations.

3. Not Wrapping Your Sandwich

When reheating a sandwich in the microwave, it is crucial to wrap it in a damp paper towel, waxed paper, or microwave-safe plastic wrap. This will ensure that the sandwich stays moist while heating and doesn’t dry out. Plus, it prevents the sandwich from splattering in the microwave, ensuring that the interior of the microwave remains spotless.

4. Not Flipping Your Sandwich

Another essential mistake to avoid is failing to flip your sandwich. Always flip the sandwich during reheating to ensure that all sides get evenly heated. This ensures that there are no cold spots left in the sandwich.

Tips And Tricks To Reheating Sandwich In Microwave

To ensure that your sandwich is perfectly reheated, the following are some tips and tricks:

1. Use A Damp Paper Towel

When reheating sandwiches, always use a damp paper towel to wrap them. This ensures that the sandwich stays moist while heating and doesn’t become dry.

2. Use A Microwave-Safe Plate

Always use a microwave-safe plate or dish to reheat your sandwich. The plate can be covered with a lid or microwave-safe plastic wrap to prevent your sandwich from drying out while heating.

3. Choose The Right Bread

Choosing the right bread is important when reheating sandwiches in the microwave. Bread such as bagels and croissants will not reheat well in the microwave as they become very spongy. So, if you can, choose bread that is denser and less prone to moisture.

4. Reheat In Short Intervals

To avoid overcooking or undercooking your sandwich, heat it in short intervals of around 20-30 seconds. This will ensure that you can check on the sandwich’s progress and stop it when it reaches the desired temperature.

5. Add Moisture

If you are reheating a sandwich that has been refrigerated, it may become too dry when reheated. To prevent this from happening, add some moisture. For instance, you can add some mayonnaise, mustard, or oil to the sandwich before reheating. This will prevent the sandwich from becoming too dry during reheating.

6. Remove Fillings

If you want to reheat a sandwich with a filling that needs separate heating, remove the fillings and reheat them separately. This ensures that all parts get evenly heated and that there are no cold spots left behind.

Conclusion

Reheating sandwiches in the microwave can be a quick and easy way to have a meal ready in minutes. To ensure that your sandwich is properly reheated, follow the safety measures outlined above and avoid common mistakes. Also, use the tips and tricks highlighted to make sure that your sandwich remains moist and tasty. By following these guidelines, you’re sure to have a delicious sandwich each time that you reheat it in the microwave.

FAQS

Can I Reheat Any Type Of Sandwich In The Microwave?

Yes, most types of sandwiches can be reheated in the microwave, including options like grilled cheese, deli sandwiches, and paninis.

How Long Should I Microwave My Sandwich For?

This will depend on the size and type of sandwich, but a good rule of thumb is to start with 30 seconds and add more time as needed. Be sure to check the sandwich after each interval to prevent overcooking.

Should I Cover The Sandwich When Reheating It In The Microwave?

Yes, covering the sandwich with a paper towel or microwave-safe lid will help to prevent it from drying out and ensures more even reheating.

Is It Safe To Microwave A Sandwich With Condiments Like Mayo Or Mustard?

Yes, it is safe to leave condiments on the sandwich when microwaving. However, if you are sensitive to temperature changes in these condiments, you can also add them after reheating.

Can I Reheat A Sandwich That Has Been Sitting Out At Room Temperature?

It is not recommended to reheat a sandwich that has been sitting out at room temperature for more than 2 hours. Bacteria can start to grow in this time period, potentially causing foodborne illness. It is best to discard and make a fresh sandwich.