Butter in coffee is made by blending a tablespoon of unsalted, grass-fed butter into hot brewed coffee—often with MCT oil or coconut oil for added creaminess and health benefits. The result is a rich, ...
Over ten years ago, Bulletproof popularized mixing coffee with butter as a form of biohacking. Now the company is moving in a new direction, and hopping on a more recent trend: Cold coffee at home.