It's a thing. Haven't you heard? Butter in your coffee. It's the latest health fad spruiked by fans of the paleo diet, and those looking for a mental edge.
Butter-coffee may sound a little wacky, gross even, but fans say it tastes better than a creamy latte.
See more here: http://www.stuff.co.nz/life-style/food-wine/drinks/10193600/Butter-in-your-coffee-Its-a-thing