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Can You Reheat Bulletproof Coffee? – The Ultimate Guide

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Bulletproof coffee has taken the caffeine and dieting world by storm. Bulletproof coffee is a high-grade coffee made from non-toxic coffee beans, with unsalted butter from grass-fed cows, and Brain Octane Oil, which is stronger than the normal coconut oil. It is a creamy coffee drink and is served warm, with a latte-like appearance.

It would seem obvious to many that heating up normal coffee is fine, but as Bulletproof Coffee contains butter and oil, is it okay to be reheated? Yes, you can reheat bulletproof coffee. As it contains butter and oil, when Bulletproof Coffee cools, the butter and oil solidify. This is obviously not going to be great to try and drink/eat, so it is much better when served warm. While it is not ideal to reheat Bulletproof Coffee, you can certainly do so in the microwave for a few seconds.

Reheating Bulletproof Coffee

In The Microwave

If your Bulletproof Coffee has cooled and partially solidified, the best way to reheat it would be in the microwave.

You need to make sure that you heat it enough for the butter and oil to turn back into liquid form, but not enough for it to become scalding hot.

You also run the risk of the butter and oil becoming quite explosive in the microwave if you do leave it in for too long.

  • Heat it up for 15 seconds at a time until it has warmed through and become liquid again.
  • You might need to give it a good stir to mix the oil, butter, and coffee together so that you will not be sipping them separately.

On The Stovetop

Another way to reheat Bulletproof Coffee is on the stovetop. This is more labor-intensive, but it can have some good results.

  • Place a small saucepan on the stove and turn the heat on to medium.
  • Pour in the cooled Bulletproof Coffee and stir it continuously as it heats up.
  • Stirring throughout the heating process allows the coffee, oil, and butter to mix properly and you will land up a creamy drink.

Coffee, oil, and butter all heat up at different temperatures, so it is really important to keep a watch on the Bulletproof Coffee as it heats up, to not burn the butter, overheat the coffee, or end up with boiling hot oil.

Stirring throughout the warming process is the best way to mix all the ingredients together for the most delicious cup of creamy coffee.

How To Make Bulletproof Coffee At Home

Bulletproof coffee has become a large part of many diets, particularly the ketogenic diet, and acts as a replacement for breakfast. It is fairly easy to make your own Bulletproof Coffee at home, as long as you have the right tools and ingredients. Here is how:

What you need:

  • 1 cup of filtered water
  • 2 tablespoons of freshly ground, low-toxin coffee beans
  • 1 teaspoon of Brain Octane or MCT oil
  • 1 tablespoon of grass-fed butter or ghee


  1. Brew the coffee however you want, using your preferred method, just until the water begins to boil.
  2. Add in the butter
  3. Add in the MCT oil
  4. Mix the coffee, butter and oil in a blender for 20 seconds, or until it is frothy and looks similar to a latte

If you do not have a blender at home, you could use a handheld blender or a shaker bottle. The shaker bottle does require quite a bit of physical effort to shake the mixture up enough for the oil and butter to combine with the coffee and become creamy, but it does work in the end.

For those who want a few cups of Bulletproof Coffee throughout the day, but do not want to go through this process more than once, you can refrigerate cups or portions of the Bulletproof Coffee to heat up later on in the day.

The longer the Bulletproof Coffee is left in the fridge, the more you will have to blend or mix it together later on when you heat it up again, as the butter and oil will become more solid and hard in the fridge, forming a thick, solid layer in the coffee, which will remain a liquid.

Why Should You Drink Bulletproof Coffee?

Bulletproof Coffee supposedly boosts your metabolism, which in turn results in weight loss, makes you more alert and keeps you fuller for longer. It also contains antioxidants which are always great to include in your diet.

Normal coffee gives you a caffeine boost after being consumed, but this usually fades after an hour or two and can lead to fatigue.

Bulletproof Coffee supposedly helps you be more alert, as you do not get the normal food cravings after drinking it, as the butter and oil help to keep you feeling full for longer, which then helps you stay more alert and feel more awake for longer as well.

If you use good quality butter and oil, your digestive system should slow down, which helps to release a gentler and longer-lasting caffeine hit.

The caffeine in the coffee acts as a suppressant to food and helps to raise your heart rate, while the butter and oil break down bad fats.

This way, your body is put into ketosis, which is the body burning fat instead of sugar to produce energy, which in turn results in more muscle and less body fat. For this reason, many people choose to skip breakfast and instead have a warm cup of Bulletproof Coffee to start off their day.

Is It Worth It?

While Bulletproof Coffee can help decrease your waistline, it is very high in calories, with each cup of Bulletproof Coffee containing around 400 calories.

Some dieticians argue that these calories should instead be consumed with actual food, and not with the coffee alone.

Many people also do not enjoy the taste, and it is more of an acquired, richer taste that can be difficult to get used to. Fat is important in your daily diet, but it is not necessary to get all of the recommended daily amounts from one cup of coffee alone.

The fat content in Bulletproof Coffee can be difficult for some people to digest and can lead to nausea or frequent trips to the bathroom.

Replacing your breakfast with Bulletproof Coffee might also cause you to miss out on other important foods, such as eggs, oats, and berries, which are highly nutritious and help to put you on the right track for a healthy and productive day.

Considering all of this, there do not seem to be too many negative effects from drinking Bulletproof Coffee, other than the high-calorie count and possibly the taste. So it is worth a try if it sounds like something you would like to include in your daily diet!

Related Questions

How many cups of Bulletproof Coffee can I have in a day?

As Bulletproof Coffee is a high-calorie drink, you should not have more than two or three cups a day. This will also depend on how sensitive you are to caffeine as well.

You should not have Bulletproof Coffee after 2 pm, as the caffeine could keep you up at night and disrupt your usual sleeping schedule, as Bulletproof Coffee allows for a slower release of caffeine.

Can I have Bulletproof Tea?

For those who are not too keen on coffee, you can make Bulletproof Tea. You would brew your tea as you would your coffee before adding it to the butter and oil before blending.

You will still benefit from the butter and coffee, and any other nutrients from the tea, but the caffeine boost will not be as strong, as tea obviously does not hold as much caffeine as coffee.

Bulletproof Tea is great to drink in the afternoon as it will not keep you awake for longer periods.

You can also try making cacao coffee, which has a lesser amount of caffeine as well.

Can I use coconut oil in Bulletproof Coffee?

You are able to use coconut oil in Bulletproof Coffee, as an alternative to Brain Octane or MCT Oil. Coconut oil might be more readily available in grocery stores and does work well as a substitute oil in Bulletproof Coffee.

Can you have Bulletproof Coffee while fasting?

As Bulletproof Coffee has around 400 calories, it will break your fast. It also contains fats and oils which are similar to foods during a fast.

However, for those who are not fasting completely, it is okay to have a cup of Bulletproof Coffee in the morning to get you started on your day.

Reheating Bulletproof Coffee

Bulletproof Coffee might not be for everyone, but for those who choose to include it in their daily diet, it might become laborious having to make it from scratch every morning.

If you choose to make an extra cup or two to refrigerate to enjoy later, or if your Bulletproof Coffee has gone cold, the best option would be to reheat it in the microwave.

Do this in short bursts as the butter and oil will heat up fast, and you do not want it to overflow in the microwave, or be boiling hot when you take your first sip!

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