Zero-carb, high-fat energy. Blending coffee with butter (and optionally MCT oil) delivers 0g net carbs and sustained satiety. Great for keto when used intentionally—remember it’s not a complete meal (no protein or fiber).
Is Coffee with Butter (Bulletproof) Keto?
Coffee & Tea

KETO VERDICTYES
Zero-carb, high-fat energy. Blending coffee with butter (and optionally MCT oil) delivers 0g net carbs and sustained satiety. Great for keto when used intentionally—remember it’s not a complete meal (no protein or fiber).
- Net carbs (100g)0g
- Protein (100g)0g
- Fat (100g)14g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Net Carbs
0g
Total Carbs
0g
Fiber
0g
Protein
0g
Fat
14g
Calories
130
Source: USDA FoodData Central
WHY IT'S KETO-FRIENDLY
- Zero carbs: 0g net carbs keeps blood sugar and insulin low
- High fat: ~14g fat per 100ml supports ketone production and satiety
- MCT option: Medium-chain triglycerides are rapidly oxidized and can raise ketones
- Stable energy: Caffeine + fat for a smoother lift vs. sugary coffee drinks
- Appetite control: Helps extend fasting windows or reduce snacking
- Convenient breakfast replacement (see considerations for protein/fiber needs)
HEALTH BENEFITS
- Sustained energy: Fat provides long-lasting fuel alongside caffeine
- May aid fat adaptation: High-fat profile complements ketogenic metabolism
- Thermogenic effect: Caffeine can modestly increase energy expenditure
- Fat-soluble vitamins: Grass-fed butter supplies vitamin A and small amounts of K2
- Butyrate from ghee/butter may support gut lining health
- Electrolyte-friendly: A pinch of salt can help hydration and performance on keto
PREPARATION SUGGESTIONS
SIMPLE BULLETPROOF
Blend hot black coffee with 1 Tbsp butter and 1 Tbsp MCT oil until frothy.
VANILLA VERSION
Add vanilla extract or cinnamon for flavor without carbs.
CREAMY UPGRADE
Add 50ml heavy cream for extra richness and fat (still near-zero carbs).
GHEE ALTERNATIVE
Use grass-fed ghee instead of butter for more butyrate and minimal lactose.
MCT EMPHASIS
Increase MCT oil gradually (start 1 tsp) for stronger ketone support.
MORNING RITUAL
Enjoy within 1–2 hours of waking for steady morning focus.