I tried the high-tech cafe that wants to hack your body by adding butter to your coffee

But it's become a craze among bio-hackers and those looking to add extra energy to their day.

Championed by Dave Asprey, author of "The Bulletproof Diet," the aptly-named "Bulletproof coffee" is a mix of specially treated coffee, butter from grass-fed cows, and "brain octane" oil, a proprietary version of MCT (medium-chain triglyceride oil), which is similar to coconut oil. 

You've never seen these ingredients on a Starbucks menu. But they're staples at the Bulletproof Café in Santa Monica, California. 

During a recent trip to Santa Monica, I stopped by to see if a coffee with butter concoction could keep me fueled for my drive back to San Francisco. Here's what it was like: