Rick and Michael Mast, the brothers behind Mast Brothers Chocolate, the craft chocolate company known for its colorful packaging and interesting flavors (goat's milk, olive oil), are about to open their factory and shop in the downtown Arts District. The Masts, who have chocolate-making facilities and shops in Brooklyn and London, are showcasing every aspect of their process at the factory in Los Angeles.

The 150-pound sack of beans the brothers were just inspecting is lying on a metal table inside a giant black cube. If it weren't for the neat stacks of colorfully wrapped chocolate bars on display or the big wooden menu near the entrance listing, the minimalist 6,000-square-foot space would seem more like an art gallery than a functioning chocolate factory. In a sense, it is both.