Keto coffee, AKA Bulletproof coffee is often used by people when intermittent fasting through to lunch or dinner time.
Make an expresso coffee
2. Place the shot of expresso into a blender with the other ingredients. (Make sure your blender can be used for boiling hot liquids).
3. Blend on high until the coffee looks frothy as in the picture
4. Place liquid into a mug and top up with boiling hot water if you want