mug of bulletproof coffee

Basic Bulletproof Coffee: for Intermittent Fasting {Keto, Paleo, GAPS, 3 ingredients}

I may receive a commission if you purchase through links in this post. I am not a doctor; please consult your practitioner before changing your supplement or healthcare regimen.

While Bulletproof Coffee has been popular for some time, it’s less commonly used, but an effective tool, to support the process of intermittent fasting.

The basic principle of intermittent fasting is this: after 12 hours of holding on to fat, the body allows it to be released. By skipping one meal, or in this case enjoying bulletproof coffee for breakfast, a longer fast of 18 hours gives the body 6 hours to usher out fat and to cleanse the liver.

Our digestive system is allowed to rest, which allows the body to remove fat cells and toxins!

As Tom Cowan says in his article for the Weston A. Price Foundation, “…in those final six hours you are creating an anti-inflammatory, anti-insulin and glucagon-rich environment. It’s probably the best anti-aging strategy you can adopt.” Cowan continues by saying that caffeinated coffee (with a Bulletproof-style preparation) does not alter the hormonal process of intermittent fasting and may even help it.

The recipe that follows is the “cleanest” version of bulletproof coffee, specifically designed to aid intermittent fasting. This recipe does not contain any sweeteners, any cocoa, any additional flavorings.

Yet, it’s delicious and yes, you can even make it with decaf.

cup of bulletproof coffee


Basic Bulletproof Coffee
Prep Time
5 mins
Total Time
5 mins
Servings: 1 mug
Author: Megan
  • 1 12 ounce cup hot coffee decaf or regular
  • 1 Tablespoon unsalted butter or ghee, grass-fed (make sure it's unsalted)
  • 1 Tablespoon MCT Oil or coconut oil (see Recipe Notes for source)
  1. Place hot coffee in blender.
  2. Add unsalted butter and MCT oil. Put lid on blender.
  3. Use caution when blending hot liquids. Start on lowest speed.
  4. Blend 12 seconds, increasing speed to medium.
  5. Serve.
Recipe Notes

Find MCT oil here.


Have you tried intermittent fasting? What about Bulletproof Coffee? I’d love to hear your experiences.

Comments 28

  1. I actually have tried IF. It was years ago, In 2012-2013, I think? I did it the WRONG way by having just caffeinated coffee with stevia in the mornings, and it crashed my adrenals. This is a much better way! And I’d definitely do decaf!

    1. I’m glad there’s more information now about how to do IF, and I appreciate you sharing your experience. IF is not for everyone, for sure. We sure need to take care of our unique bodies. Yay for decaf!

  2. I haven’t tried intermittent fasting for the same reasons that Raia listed but I’d like to one of these days. Although for about 6 months I was sort of doing intermittent fasting by not eating for 12 hours, but I’ve never done the drink like this.

  3. This is most interesting! My current daily routine has 15 hours between dinner and breakfast already. I think I’ll try having bulletproof coffee at breakfast time and postponing eating to lunch, taking me to the 18 hours. I made bulletproof coffee when it first came out and really enjoyed, so it will be nice to get back to it!

    1. Oh wonderful! It’s great when it works so well into one’s current eating schedule. I hope you enjoy the practice and bulletproofs again!

  4. This would be easy for me…since doing a more keto-ish style diet, I am not hungry in the morning until late…so a coffee like this would help push me to 11 or 12 for lunch!

  5. I have been doing intermittent fasting for almost a year now. One of the big benefits for me is that it has helped curb my appetite and get me more comfortable with hunger. I have recently started doing bulletproof coffee as part of my fasting. It allows me to fast for longer. And it really delicious. I am gearing up to do a keto diet come spring time. I also want to do the bulletproof diet. I just got the book and love it so far.

  6. I love bulletproof coffee exactly this way! I think it’s incredibly delicious without extra flavouring. I haven’t intentionally intermittent fasted but I often don’t eat until midday because I find my system is happier that way!

  7. Since I started the bulletproof diet my IC has been worse. 🙁 I’m not sure what’s triggering it. I absolutely love bulletproof coffee but have given it up to see if it helps. Not seeing a big improvement yet… so am thinking of the food intolerance test you suggested. I have been upping my coconut/MCT and olive oil intake so if I was intolerant of fruit, I guess that may be why? Thanks for sharing your story with us Megan. 🙂

    1. Hi Janet, yes, the fruit could certainly explain the issue. As you probably read in the IC post, 50% of those with IC are intolerant to fruit. Also, coffee is a known aggravating factor for IC, so coffee itself may not be a good idea right now. Either way, the evaluation from Dr. Zeff is invaluable. Much love. 🙂

  8. I’ve never tried intermittent fasting before! I need to read up on it! Your coffee looks perfect! <3

    1. Post

      Hi Juletta, one of the reasons bulletproof recipes use butter is that it has different nutrition than cream AND it blends in and BECOMES creamy! 🙂 It’s kind of the amazing magic of bulletproofs! So, you can use cream, but that’s a different drink. I recommend you try bulletproof with butter and see what you think. Thanks for the great question!

    1. Post

      Hi Darek, you might enjoy this article: I didn’t go into the details about how and why in this post, because it’s been talked about in other articles I’ve written; but basically bulletproof coffee is the one food/drink that can actually assist the body with fasting goals. Here’s another good post too: Thanks for the question!

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