Can You Microwave McDonald’s Coffee Cups?(Solved)

microwaving McDonald's coffee cup

Have you ever found yourself with a cup of coffee from McDonald’s that’s gone cold and you’re wondering whether you can throw it in the microwave? Well, you’re not alone! We’ve all been there, and we’re here to help you out.

Microwaving food and drinks is a common practice, but when it comes to fast-food cups, it’s not always clear whether it’s safe or not. In this blog post, we’re going to tackle the million-dollar question – Can you microwave McDonald’s coffee cups?

We’ll dig into the nitty-gritty details and provide you with all the information you need to know about safely reheating your coffee without risking your health or damaging your microwave. So, if you’re ready to learn whether you can nuke that cold cup of Joe from McDonald’s, grab your favorite mug, and let’s get started!

So, Can You Microwave McDonald’s Coffee Cups?

Microwaving McDonald’s coffee cups is not recommended as the cups are not deemed microwave-safe by the company. These cups are constructed using plastic or wax, which can melt when exposed to microwave radiation. This may result in a hazardous spill, making it unsafe for reheating in the microwave.

So, if you’re looking to reheat your coffee, it’s best to do so in a pot on the stove.

Although you may be tempted to save time by popping your Mcdonald’s coffee cup in the microwave, it’s best to just transfer it to a microwave-safe container before doing so. This will ensure that your coffee is properly reheated and that you don’t end up with a mess to clean up.

What Are Macdonald’s Coffee Cups Made Of?

The standard coffee cup that Macdonald’s uses is typically made from cardboard with a paper liner and plastic lining for sealing in heat and an inner layer of wax or plastic for additional protection against leaks.

This combination of materials is designed to withstand hot liquids, such as coffee, but it is not intended to be microwaved.

The combination of heat and the microwave’s powerful radiation can cause the materials in the cup to melt, potentially leading to chemicals from the cup leaching into the coffee or causing the cup to burn and leak.

Now, you might say, but cardboard containers won’t catch fire in the microwave. That’s generally true, but if the cup is scrunched up, the cardboard can heat up quickly and potentially start a fire.

While it is possible to microwave Mcdonald’s coffee cups without incident, it is not recommended. There is always a chance that something could go wrong, causing you or someone else to get injured.

How to Tell If Your Coffee Cup Is Microwavable

Regardless of where you get your coffee, it’s important to check the label to see if it is microwave-safe.

All microwavable containers will have a symbol on them that looks like a microwave with three squiggly lines inside or the word “microwave” written on it. If your coffee cup doesn’t have this symbol, it’s not meant to be microwaved.

If you’re still curious, you can check out the company’s website. Every big fast-food company and coffee chain has a page on their website dedicated to the safety of their products.

It includes a list of all of their items that are not meant to be microwaved, as well as a few tips for reheating their food and drinks.

Should You Reheat Coffee in a Microwave?

When it comes to reheating coffee, the answer is a resounding no. This is because the reheating process can cause the coffee to taste terrible.

The coffee’s flavor can be changed, even becoming bitter. Therefore, it is always best to just drink coffee right after it has been made. If you do have any leftover coffee, I would just throw it out.

You see, the thing about coffee is that it is a one-time use kind of deal. Unlike other types of hot beverages, you can’t really reheat coffee and expect it to taste the same. This is because reheating coffee changes its chemical makeup, which in turn affects the flavor.

But if for some reason you really need to reheat your coffee, for instance, if you’re at work and forgot to bring your thermos, you can do so in a pot on the stove or microwave. Just make sure that you heat it slowly and at low heat so that you can still somewhat preserve the flavor of the coffee.

How to Safely Reheat a Mcdonald’s Coffee in The Microwave

If you are going to reheat your Mcdonald’s coffee in the microwave, here are a few simple instructions to follow.

1. Use a microwave-safe mug to transfer the coffee to

It’s important to transfer your Mcdonald’s coffee to a microwave-safe container before reheating it. This will help avoid what could be a potentially dangerous accident.

There are a variety of different types of microwavable containers that you can use to reheat your food. These include ceramic, glass, and plastic containers.

Each material has its own advantages and disadvantages. For instance, ceramic and glass containers typically don’t have any dangerous chemicals, but they can shatter if dropped.

Plastic containers are typically cheaper than the other two options, but they might leach chemicals into your food, so you have to be sure to choose the BPA-free option.

2. Reheat the coffee in 30-second increments on low heat

Microwaving coffee at low heat and in short increments helps preserve the coffee’s flavor. Be careful not to microwave it for too long, or it might start to taste bitter.

3. Stir the coffee after each increment

Stirring the coffee after each increment helps to evenly distribute the heat, which will help to prevent any hot spots from forming.

4. When the coffee is finished reheating, use a glove or towel to touch the mug

Be sure to use a glove or towel when removing the coffee container from the microwave. This will help to protect your hands from any potential injuries.

5. Enjoy your reheated coffee

Now that you know how to reheat your Mcdonald’s coffee in the microwave safely go ahead and try it out!


McDonald’s warns their customers not to microwave their coffee cups because the plastic or wax components will melt and create a dangerous spill.

In order to properly reheat your McDonald’s coffee, it’s best to transfer the contents of your Mcdonald’s cup into a microwave-safe container. This will help you avoid a mess and make sure that your drink is heated thoroughly without melting any plastic or wax components.

While coffee will taste a lot better if you drink it right after it is made, there are ways to reheat it if you absolutely have to. You can do so on the stove or microwave, but make sure that you heat it up slowly and at a low temperature.


Can I reheat coffee that has been sitting out for a while?

A: It’s best not to reheat coffee that has been sitting out for more than an hour or two. The coffee will start to lose its flavor and aroma, and it might also contain harmful bacteria.

Can I reheat my Mcdonald’s coffee more than once?

It’s not recommended to reheat your Mcdonald’s coffee more than once. Depending on how long it’s been since the coffee was made, it might start to taste bitter or lose its flavor.

Can you store coffee in the fridge?

Coffee should not be stored in the fridge in any form. The fridge is not cold enough to keep your coffee fresh, even if you store it in an airtight container.

How do I reheat a cup of coffee on the stove?

To reheat coffee on the stove, place it in a pot and heat it over low heat until it is warm. Stir the coffee occasionally to help distribute the heat evenly.

If you’re looking for instructions on how to reheat other McDonald’s products in the microwave, be sure to check out our other articles. We have instructions on how to reheat fries, burgers, chicken nuggets, and apple pies.

By Rosie Elliott

I’m Rosie. I’m a professional chef with experience in Western, Mediterranean, and Italian cuisine. I’ve been cooking for over 15 years, and I have two daughters that keep me busy!