title_body: Bulletproof Coffee: how to blend butter well
upvoted_answer: I have been drinking Bulletproof coffee since 2012 now, so made a few of them. Originally I made a BIG mistake of just stirring butter in the coffee with coconut oil or MCT Oil. You can see how horrible the oil slick looked with an old video I did years ago https://www.youtube.com/watch?v=rap-spa3RfI
  
  What I have found is that you basically need a high speed blender. Vitamix or Blendtec are two brand names Dave has suggested. My wife and I use one called Magimix and it revolutionised how the coffee looks and tastes. So speed is the key. I haven't found a difference by adding the butter or oil in a certain order or way into the blender.