What is Bulletproof Coffee? – Dr. Berg's Coffee Hack
What is Bulletproof Coffee? – Dr. Berg's Coffee Hack is a easy American (Keto) recipe that serves 1. 250 calories per serving. Recipe by Dr. Eric Berg DC on YouTube.
Prep: 6 min | Cook: PT0M | Total: 11 min
Cost: $14.96 total, $14.96 per serving
Ingredients
- 8 oz Brewed Coffee (hot, freshly brewed)
- 1 tbsp Grass‑Fed Butter (softened for easier blending)
- 1 tbsp MCT Oil (preferably a high‑quality, flavorless MCT oil)
- 1 packet Xylitol (approximately 1 tsp; provides mild sweetness)
- 5 g Unsweetened 100% Cacao Chocolate (one small square, chopped finely; use a high‑quality bar)
Instructions
Brew Coffee
Brew 8 oz of hot coffee using your preferred method. Aim for a temperature around 180°F (82°C).
Time: PT5M
Temperature: 180°F
Prepare Chocolate
Take a small square of 100% cacao chocolate (≈5 g) and chop it finely on a cutting board.
Time: PT1M
Blend All Ingredients
Add the hot coffee, 1 tbsp grass‑fed butter, 1 tbsp MCT oil, 1 packet xylitol, and the chopped chocolate into the blender. Blend on high for 30‑45 seconds until the mixture is frothy and the fats are fully emulsified.
Time: PT1M
Serve
Pour the blended coffee into a mug and enjoy immediately.
Time: PT30S
Nutrition Facts
- Calories
- 250
- Protein
- 0 g
- Carbohydrates
- 2 g
- Fat
- 28 g
- Fiber
- 2 g
Dietary info: Keto, Low‑Carb, Gluten‑Free, Paleo‑Friendly, Vegetarian
Allergens: Dairy (butter), Cocoa
Ingredient Substitutions
- Instead of Brewed Coffee: Cold brew concentrate (diluted)
- Instead of Grass‑Fed Butter: Ghee (for dairy‑free)
- Instead of MCT Oil: Coconut oil (less concentrated)
- Instead of Xylitol: Stevia (adjust to taste), Erythritol
- Instead of Unsweetened 100% Cacao Chocolate: Lily's 40% cacao chocolate sweetened with stevia
Equipment Needed
- Coffee Maker or French Press
- High‑Speed Blender
- Measuring Spoons
- Knife
- Cutting Board
- Mug
Critical Steps — Do Not Skip
- Blend all ingredients until fully emulsified and frothy; this prevents the coffee from separating.
Chef Tips from the Video
- Use a high‑quality, grass‑fed butter for the best mouthfeel and nutrient profile.
- A high‑speed blender creates a café‑style foam that makes the drink more satisfying.
- If you’re sensitive to caffeine, use half the amount of coffee and increase the chocolate piece for a milder stimulant effect.
Troubleshooting
The coffee separates after blending.
Blend for an additional 10‑15 seconds on high; ensure the butter and MCT oil are at room temperature before blending.
The drink is too thick.
Add 1‑2 oz of hot water and blend briefly until the desired consistency is reached.
The flavor is too bitter.
Add a second packet of xylitol or a pinch of sea salt to balance bitterness.
Storage
Refrigerator: If any coffee remains, store in a sealed container for up to 24 hours and reheat gently before re‑blending.
Freezer: Butter, MCT oil, and chocolate can be kept in the freezer for up to 3 months.
Room temperature: Keep chocolate and xylitol in a cool, dry pantry.
Make-Ahead Tips
- Pre‑measure butter, MCT oil, and xylitol into a small jar for quick access.
- Keep a chocolate square ready in the freezer; it shaves easily when cold.
Frequently Asked Questions
What is the cultural significance and history of bulletproof coffee in the keto community?
Bulletproof coffee originated as a high‑fat, low‑carb beverage popularized by Dave Asprey and quickly adopted by the keto community as a breakfast substitute that promotes satiety and ketone production.
How does the addition of unsweetened 100% cacao chocolate enhance the traditional bulletproof coffee recipe?
Unsweetened cacao adds a small amount of natural caffeine, theobromine, magnesium, and polyphenols, which can improve focus, mood, and cardiovascular health while keeping carbs very low.
What traditional regional variations of keto coffee exist in American health‑food culture?
In the United States, variations include adding MCT oil, coconut oil, ghee, or flavored low‑carb sweeteners such as stevia or erythritol, as well as incorporating spices like cinnamon or vanilla.
What occasions or celebrations is bulletproof coffee traditionally associated with in keto culture?
Bulletproof coffee is commonly consumed in the morning during intermittent‑fasting protocols, before workouts, or as a pre‑workout boost for keto followers seeking sustained energy.
What are the most common mistakes to avoid when making bulletproof coffee with unsweetened cacao?
Common errors include blending hot coffee too quickly (causing splatter), using cold butter which won’t emulsify, adding too much chocolate (making the drink overly bitter), and neglecting to blend long enough for a stable foam.
Why does Dr. Eric Berg’s recipe use xylitol instead of a zero‑glycemic sweetener?
Dr. Eric Berg uses a single packet of xylitol because its glycemic index is low (≈30) and the small amount has negligible impact on blood sugar while providing a pleasant sweetness without the after‑taste of some zero‑calorie sweeteners.
Can I make bulletproof coffee ahead of time and how should I store it?
You can brew coffee in advance and keep it refrigerated for up to 24 hours. When ready, reheat gently and blend with the butter, MCT oil, sweetener, and chocolate for the same frothy texture.
What texture and appearance should I look for when blending bulletproof coffee?
The finished drink should have a thick, creamy consistency with a light, latte‑like foam on top. No visible oil separation should be present.
What does the YouTube channel Dr. Eric Berg DC specialize in?
The YouTube channel Dr. Eric Berg DC specializes in health education focused on keto dieting, intermittent fasting, hormone balance, and practical low‑carb recipes for weight loss and metabolic health.
How does the YouTube channel Dr. Eric Berg DC's approach to keto cooking differ from other keto cooking channels?
Dr. Eric Berg DC emphasizes scientific explanations behind each ingredient, often incorporating clinical insights and metabolic reasoning, whereas many other keto channels focus primarily on taste or quick‑fix recipes.
Last updated: August 28, 2026
