For a while now dark chocolate has been marketed as a hip vice: even a dollop, they said, could make the heart healthier, the mind more focused.

But last year Tcho, the socially conscious boutique chocolatier from San Francisco, cranked it up a nosh. Co-founders Timothy Childs (a former NASA spaceshuttle technologist) and chocoguru Karl Bittong—along with first investors Louis Rossetto and Jane Metcalfe, who in 1993 cooked up a little magazine called Wiredrolled out Tcho-a-Day, 30, 60, or 90 minibars in a jar, to gourmet shops and Starbucks (slogan: "The last good drug"). This fall, they'll offer four new collections and the first-ever tours of Tcho's factory, built within the walls of a turn-ofthe-century warehouse at Pier 17 on the Embarcadero, where deckhands used to offload coffee 100 years ago. Wake up and taste the cacao, (tcho .com)