So I was out climbing yesterday and my partner starts talking about butter in his coffee. When I got home I did a bit of research and found out it's called bulletproof coffee. Have any of you done this method? The pages I found seem to talk about a certain type of coffee ie not big box blends. Most seem to talk about the creators coffee and that makes me think it's a ploy to sell more of his coffee. http://www.bulletproofexec.com/bulletproof-coffee-recipe/. I drink large amounts of coffee al day and night and I'm always looking for new blends but not sure his is worth it.