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.

I’m a coffee drinker. Period. It doesn’t matter if it’s in the waiting area at Jiffy Lube, in the parking lot at Dunkin’, or at a vibey Indie mom-and-pop café that harvests their Arabica. If there’s ...

The company famous for mixing butter with coffee is releasing a new product. It’s not butter, if you can believe it. Over ten years ago, Bulletproof popularized mixing coffee with butter as a form of ...