A recipe for high-tech chocolate Summary: Silicon Valley tech culture meets San Francisco food culture at the new factory for artisan chocolate maker, Tcho. June 18, 2009 -- 10:27 GMT (03:27 PDT) SHARE: SUBSCRIBE TO: iPhone TOPICS: iPhone, Mobility 0 June 18, 2009 -- 10:27 GMT (03:27 PDT) Loading... Please wait. Topics: iPhone, Mobility Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.