An avid climber, Evan Sims found that a diet high in animal fats worked best to give him the energy he needed. In fact, it wasn’t unheard of for Sims to drink a pint of heavy cream for dinner, and eat half a stick of butter before scaling a peak. (He tried to eat a whole one, but couldn’t).

He did this before scaling a granite monolith called the Incredible Hulk in the Sierras, “and it was the first time I really showed myself you can fuel these activities with fat.”

Sims, who lives in San Francisco and worked as a chemical engineer – specifically in fermentation – for about five years, is starting a new venture, with a product unlike anything on the market. He’s calling it “triple cream yogurt.”

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