You may have been lured into Williams-Sonoma by the smell of sizzling meat or baking bread, but this Saturday, there's an even better reason to hit up the luxury kitchen goods store. Roy Choi and his Kogi BBQ truck will be stopping by, and for $45, guests will receive a taco lunch from the truck, a copy of Choi's L.A. Son, and a demonstration by Chef Choi himself as he cooks his ghetto doughnuts. Yup, you'll get to taste those too. As Choi would say: That's dope.