Bulletproof Coffee for Maximum Energy, Health, and Performance

There’s a rule in Reboot: the only legit coffee is bulletproof coffee.

The truth is that it was two years after I first rebooted before I came across bulletproof coffee. And I have to say: once you go bulletproof you never go back.

To be clear, I’m not the creator of bulletproof coffee. That would be Dave Asprey. And we should all be thankful to him. But let’s get on with it…

What is bulletproof coffee?

Disclaimer: This sounds superbly awful. In fact, when I first heard about it I didn’t try it for at least 6 months because I didn’t trust the recipe. I figured it would be something one would have to drink as if they were on the final stage of Fear Factor. Rest assured, it’s delicious, like a super creamy latte.


Make sure the butter you use is grass fed. Kerrygold is a brand most likely available in your area. The fat from grass fed cows is not the same as the fat from grain fed cows. Grass fed is far better in every capacity.

How to make it

  1. Place 2 to 6 tablespoons of grass fed butter in large cup or mug.
  2. Pour 1 to 3 tablespoons of 100% pure MCT oil over the butter.
  3. Brew 16 ounces of coffee (I use a Chemex) and pour into the mug.
  4. Blend with an immersion blender. (I also highly recommend the Ninja with Single Serve — it makes 16 ounces perfectly).

What will it do for me?

The fat in the butter and the effects of the MCT oil (medium chain triglycerides extracted from coconut oil) will keep you full and energized for hours. And I call it my secret weapon because it will help you melt fat and build muscle. It’s also extremely good for you, providing necessary saturated fat and CLAs (Conjugated linoleic acids).

I prefer to have my bulletproof coffee for breakfast. It’s also great to use on an intermittent fasting protocol as it will fill you up and revamp your energy without pulling you out of ketosis.

Seriously, coffee is no longer coffee unless it’s bulletproof.


I now use an Aeropress instead of a Chemex and couldn’t be happier. The Aeropress is cheaper, easier, faster, and the taste is smoother. Seriously, get an Aeropress. The picture makes it look like a POS, but it’s solid, portable, and works extremely well and soooo simple to use and clean.

Some more science…

Greater rise in fat oxidation with medium-chain triglyceride consumption relative to long-chain triglyceride is associated with lower initial body weight and greater loss of subcutaneous adipose tissue.

“Dietary Medium-Chain Triacylglycerols Suppress Accumulation of Body Fat in a Double-Blind, Controlled Trial in Healthy Men and Women”. The American Society for Nutritional Sciences 131: 2853–2859.

Long-term clinical trials have demonstrated that MLCT and MCT result in less body fat accumulation in humans.

Physiological effects of medium-chain triglycerides: potential agents in the prevention of obesity.

The linear relationship between the proportion of fresh grass in the cow diet, milk fatty acid composition, and butter properties.

Conjugated linoleic acid improves heart health.

Conjugated Linoleic Acid Decreases MCF-7 Human Breast Cancer Cell Growth and Insulin-Like Growth Factor-1 Receptor Levels

Conjugated Linoleic Acid Reduces Body Fat Mass in Overweight and Obese Humans

Butter contains many nutrients that protect against heart disease including vitamins A, D, K2, and E, lecithin, iodine and selenium. A Medical Research Council survey showed that men eating butter ran half the risk of developing heart disease as those using margarine (Nutrition Week 3/22/91, 21:12)

About the Author

Kevin Geary is the founder of Rebooted Body and host of The Rebooted Body Podcast. He helps men and women finally get a body and life they love with his unique blend of real food, functional movement, and psychology. To work with him personally, choose a program.

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  1. enetasylum101 says

    The bulletproof coffee experience is going great. Lots of energy, no jitters and no crash. It’s hard to describe the total experience without including the enhanced alertness and focus. It’s similar to distraction isolation, whereas distractions become tasks to deal with one at a time without becoming overwhelmed. You are aware of everything going on around you from the major to the minor but your able to prioritize them, It’s weird, you will have to experience for yourself.

  2. Paula Couchman says

    I have been drinking bulletproof coffee for a while, well my way.
    I make a black instant coffee, it is all I can use, with 1 tbs organic
    butter, 1 tbs organic virgin coconut oil. Where I live in Australia
    this is all I can get. You are right about only drinking it this
    way, a friend made me a normal coffee with milk and I felt
    so sick afterwards.

  3. Simon says

    Just tried my first one with a single origin coffee – lovely !

    Question, I have just entered that middle age phase and after a life of martial arts, have hit blood pressure issues and a lack of vitality….

    Do you think this will help / aggravate ?

    Hoping to regain some energy to manage a busy job and the training I still want to do !

    Great article by the way ! Thanks !


    • Kevin Geary says

      Hi Simon, Bulletproof Coffee is a healthier version of coffee and will light your productivity on fire. But it’s not a miracle cure for other stuff. Getting your diet dialed in is most important.

      • Kay says

        “black instant coffee, it is all I can use, with 1 tbs organic
        butter, 1 tbs organic virgin coconut oil.”

        The above recipe is what was given to me recently…I’ve tried it and like it; however, are the amounts too little to make the difference it’s designed to? AND is it okay to substitute the MCT with coconut oil?

        • Kevin Geary says

          Instant coffee is likely to make you feel like crap and yes, 1tbsp butter is too little and you should not use coconut oil in place of the MCT.

          • Lexi Chassiotis says

            So being in a different country organic coffee beans would work? And mct is that like a concentrated coconut oil? Having been extracted from coconut

  4. Jonathan says

    So, what’s your thought on a bit of agave or honey added to the mix? Will it interfere with the “chemistry?” Outside of one or two cheat meals each week, I eat paleo … except for my coffee. Can’t drink it black all the time and like to add a little agave nectar.

    • Kevin Geary says

      Hi Jonathan,

      You won’t be drinking it black if you’re using the bulletproof recipe. But yes, agave and honey will both render your bulletproof coffee non-bulletproof.

      • MattP says

        I heard that that if you use raw honey as a sweetener after the blending there will not be an detrimental effects. Is this true?

        • Kevin Geary says

          What do you mean by detrimental effects? If you add honey, it’s not bulletproof coffee anymore because it doesn’t create the desired outcome.

          • jazzfeed says

            Why not?
            If “bulletproof” doesn’t mean anything, what does “non-bulletproof” mean?
            How does sweetener interfere with the benefit of the fat?
            I’d use cold-extract organic coffee (“toddy”) to bring your coffee up two more levels. The organic part is obvious; in addition, by infusing the grounds in room temperature water for 12 hours or so boiling water is never poured over them and the result is smooth and very low-acid, yet still potent caffeine-wise. The boiling-water-poured-over-beans is what creates a majority of the acidity and un-needed and un-wanted chemistry in hot-brewed coffee.

          • says

            Bulletproof is a nickname for the specific recipe. Honey and sweeteners affect blood glucose levels — Bulletproof Coffee does not. The goal is zero insulin response.

            I think your toddy recommendation would be great!

          • jazzfeed says

            You are on it, thanks! I understand your objection. However, because of the fat, I’m guessing bulletproof coffee w/some sweetener is relatively better, insulin response-wise, than non-bulletproof w/some sweetener.

            I have toddy directions ready to go for anyone who asks. Once a batch of toddy is made and stored in glass in the refrigerator it is way faster and easier to make a cup than conventional preparation.

          • says

            Fat will definitely slow absorption, but a lot of people use bulletproof coffee to aid with intermittent fasting, and sweetener of any kind would disrupt that. And I definitely don’t recommend sweeteners in general anyway.

  5. Megan says

    I’ve seen many people say the Ninja doesn’t do well with coffee – did yours do fine with the single serve cups?? I literally just bought the system today & am SO bummed that this might not be an option :( Help!

  6. fuelthechange says

    You mention using grass fed animal products a lot in your dietary suggestions, referring to them as being healthy. While I agree it’s better than the corn fed product, it still doesn’t take away that these animals are being injected with loads of antibiotics and growth hormones; thus, being consumed by us. Healthy? Just curious on your thoughts about that. Thanks!

  7. Steve says

    I know absolutely nothing about coffee and I’ve never even tried it, but I want to give this a go for breakfast as I’m never hungry in the morning.

    Assuming Bulletproof Coffee comes as coffee beans in a bag, does that mean I would need to buy a coffee grinder as well as an Aeropress in order to make this?

  8. in_waves says

    Hey Kevin!

    I had my first cup of bulletproof coffee this morning and it was delicious! However, prior to taking my coffee “bulletproof”, I have been adding Lugol’s solution (iodine) to my morning brew as a general health tonic recommended by my naturopath. Is it okay to continue adding iodine to bulletproof coffee or will it mess up the formula? Also is it okay to add stevia extract to bulletproof coffee or should that be avoided? Thanks!

  9. Elizabeth Barber says

    I read in another blog post by you that you could do the same thing with tea but I can not find any directions for that. I assume the process would be the same, but is there a particular kind of tea you recommend?

  10. Nate Jones says


    Does the added caloric intake of the coffee… 24 g/fat minimum cancel out the elevations in energy expenditure mediated by the MCT’s? I guess you just reduce your dietary fat for the rest of the day accordingly?

  11. Ashton says

    Hello! I just enjoyed my first cup of bulletproof coffee and actually purchased some grounds. I do try to avoid animal products and completely understand that undermines the point of the “bulletproof” effect. However, is there a problem with drinking it black? Will I receive any benefits?
    Thank you! :)

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