Butter or MCT oil coffee: does it break a fast?

Yes, strictly it breaks the fast: hundreds of calories of fat. It may kill hunger, but you are no longer fasting.

Approximate energy: ≈200–450 kcal

More questions

• Water (still or sparkling)
• Black coffee
• Yerba mate (unsweetened)
• Tea and herbal infusions, unsweetened
• Sweeteners (sucralose, stevia)
• Mate, coffee or tea with sugar or honey
• A splash of milk in your coffee
• Latte, flat white or cappuccino

General information; not a substitute for a health professional.