What Can and Can’t Be Put in The Microwave?

What Can and Can’t Be Put in The Microwave?

The microwave oven is a convenient kitchen appliance that anyone may use to quickly reheat cold meals. However, not everything is suitable for the microwave. It is essential for food businesses as well as customers to understand what can and can't be put in the microwave. Find out everything you need to know in the article below.

Can paper bowls go in air fryer?

Can paper bowls go in the oven

Why Should You Use Microwave?

Microwaves have become one of the most popular kitchen devices as a result of their helpful activities. Here are a few advantages of it:

  • Convenience: Using a microwave can be quite practical. Because they are tiny in size, microwaves are appropriate for use in homes, small businesses, and even stores. Food can be quickly reheated with the aid of a microwave. Food usually warms up and is ready to use in a matter of minutes, sometimes even only a few dozen.
  • Energy-saving: Compared to other oven types, microwaves consume less energy. Microwaves use less time and energy than traditional ovens to cook the same amount of food.
  • Versatility: Noodles, rice, soups, and many other dishes can be cooked, reheated, or defrosted in a microwave.

How Does Microwave Work?

A microwave oven uses indirect heat to heat food rather than direct heat. Alternatively, food is heated internally by microwaves in microwave ovens. Microwave ovens, in particular, employ microwaves to excite water molecules in the food, causing them to vibrate and generate heat.

Microwaves heat the food directly, whereas the cookware is indirectly heated by the food.

The temperature of the meal will be determined by a number of factors, including the microwave's power, cooking time, and the type of food being heated.

  • Microwave power: microwave power is determined by watts. Wattages of microwaves vary from 500 to 1200. Lower than 700 will not cook food evenly, so it is not recommended for cooking. The 1100-watt microwave is suitable for heating, cooking, and defrosting food.
  • Cooking time: Food will become hotter in a microwave oven the longer it is cooked. It's important to observe so that food is not overdone.
  • Food type: Those with a high-water content, such as vegetables and fruits, will heat up faster and to a greater temperature than those with a low water content.

Why Need to Know What Can and Can’t Be Put in The Microwave?

Understanding microwave-safe things is a must before working with food businesses and customers.

  • It is important for businesses that sell take-out packaging to distinguish between microwave-safe products. Both the delivery process and the clients should be aware of this.
  • This will help lead users avoid undesirable accidents and risks.

The particular causes are as follows:

  • Safety is the primary factor to consider. When dangerous objects are used in the microwave, dangerous substances may melt and create sparks or even fires.
  • Microwave harm: Your microwave oven may sustain harm if you use dangerous ingredients. Microwave inside damage can result from sparks from metal containers and melted plastic or styrofoam can make a mess that needs to be cleaned up thoroughly.
  • Health Dangers: Eating food tainted with dangerous substances from questionable sources can be dangerous to a person's health. These substances may result in allergic responses, digestive troubles, or even long-term health concerns.
  • Food Quality: Cooking food in a microwave-safe manner guarantees that it is done thoroughly and securely. Inappropriate materials may cause food to be overcooked, unevenly cooked, or contaminated with dangerous chemicals.

What is Safe to Microwave?

When heating food in a microwave, there are often two types of considerations: the food container (such as a bowl or cup) and the food content (such as various food types). The following lists of foods and materials are safe to use in a microwave.

Heat resistance of paper cups

Type of Food Safe to Use with Microwave

Most foods are safe to use in the microwave. Here is the list of foods that are safe to use with microwaves:

  • Fruits and vegetables
  • Meat, poultry and fish
  • Grains and legumes
  • Leftovers

Type of Materials Safe to Use with Microwave

Because of the construction and safety conditions, there are several materials to consider. The comprehensive list of microwave-safe packaging is as follows:

  • Glass and ceramic dishes: Dishes made of glass and ceramic are perfect for the microwave because they don't respond negatively to heat and hold food. They can tolerate high heat without dividing or leaching chemicals into food. Glass bowls, plates, cups, and baking dishes are typical examples.
  • Microwave-safe plastic containers: These containers are often made of heat-resistant plastics such as polypropylene (PP), polyethylene terephthalate (PET), high-density polyethylene (HDPE), or low-density polyethylene (LDPE). These containers are frequently marked with the microwave-safe sign, which is usually a wavy line or triangle with the number 5 or a microwave icon. Typical examples are yogurt cups, food storage containers, and microwaveable meal trays. 
  • Paper Plates: Certain paper plates are appropriate to use in the microwave, but before doing so, make sure to look for the microwave-safe emblem.
  • Paper Towels: Paper towels are appropriate for short-term microwave usage to absorb moisture and minimize splattering. It’s best to use shorter intervals and check both the food and the paper more frequently. Don't use too many paper towels since they can catch fire if they get too hot.
  • Silicone and Ziploc bags: Eco-friendly alternatives for plastic wrap and Ziploc bags include silicone bags that are safe to use in the microwave. They can be used for freezing, sous vide cooking, and reheating because they are heat-resistant.
  • Wax and parchment paper: These materials can be used in the microwave for a short amount of time to keep food from sticking and retain moisture. On the other hand, stay away from using wax sheets with patterns or colors since they could contain dyes that contaminate food.
  • Microwave-safe baking bags allow steam to escape while holding heat, resulting in uniformly cooked and tender food. They are a practical microwave roasting, steaming, and baking solution.

What is Not Allowed in The Microwave?

It’s important to know what type of packaging and food to avoid use with microwave to prevent incidents.

Type of Foods Need to Avoid

  • Eggs: When heated, eggs might explode, resulting in a messy cleanup.
  • Whole peppers: Due to the rise of steam pressure in the microwave, whole peppers can burst.
  • Capsaicin: Capsaicin is released into the air by hot peppers, which can irritate your eyes and lungs.
  • Frozen Meat: Frozen meat might cook unevenly in the microwave, leaving some sections frozen and others cooked.

Types of Materials Avoid to Microwave

  • Metal Containers: Metal containers, such as aluminum foil, baking pans, and cans, are not microwave-safe. Microwaves reflected off of them may result in sparks or even fire.
  • Aluminum foil: In the microwave, aluminum foil can cause sparks and represent a fire hazard.
  • Plastic Wrap: Plastic wrap, such as cling film or Saran wrap, is not microwave-safe. When it melts, dangerous chemicals may leak into meals.
  • Styrofoam Containers: Styrofoam containers are not microwave-safe. They have the ability to melt and release potentially hazardous chemical polystyrene.

What is The Symbol For Microwave Safe?

Look for the microwave-safe mark to see if an item is safe to use in the oven. Usually, a triangle or wavy line with the number five or an image of a microwave appears as this sign. The material is safe to use in the microwave if it bears this symbol. Typically, packaging has the microwave-safe mark printed on the back or bottom.

If you can't identify the sign, try to figure out what the products are made of. To avoid incidents, keep in mind the items listed above that are harmful to use with a microwave or unlabeled, suspicious products.

Additional Tips for Using a Microwave Oven

  • Cover food: Covering food prevents splattering and helps to maintain moisture.
  • Stir food halfway through cooking to ensure even heating.
  • Use a food thermometer to check the interior temperature of meat, poultry, and fish for safety.
  • Allow food to rest: Allow food to rest for a few minutes before serving to allow heat to disperse evenly.
  • Keep the microwave clean by wiping it down after each use.
  • Remove tough stains: For tough stains, use a baking soda or vinegar solution.
  • Clean the door seal and vents: To keep the seal and vents operating properly, clean them on a regular basis.

Frequent Asked Questions

Are paper containers microwave safe?

Not every paper container can be used in a microwave. It is dependent upon the kind of paper and the particular container. On the container, look for the microwave-safe mark.

Is paper bowl microwavable

Not all paper bowls can be microwaved, but some can. Check the bowl for the microwave-safe symbol. Do not use a bowl in the microwave if it does not have this sign.

Can paper cups go in the microwave?

Not all paper cups can be placed in the microwave. Check the cup for the microwave-safe symbol. Do not use a cup in the microwave if it does not include this label.


In summary, it is essential for both customers and businesses to understand what is safe and harmful to use with microwaves for a variety of reasons. At Kimecopak, we offer a variety of freezer- and microwave-safe food packaging options, such as paper soup containers and to-go box, that are useful for both business food packaging and consumer consumption. Please visit the website kimecopak.ca, send an email to halo@kimecopak.ca, or message us on Kimecopak Facebook Page to learn more information.

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