Ghirardelli may be San Francisco's best known chocolate, but production moved away years ago. Today, TCHO is the real San Francisco chocolate -- and it's the only place in town involved in the entire chocolate making process.
However it first emerged, the sandwich-cookie concept is sheer mathematical genius: Eat two cookies at the same time, but by virtue of the fact that they are stuck together with a delicious substance, you can say that you have eaten only one.
Major innovations have taken place in the chocolate industry in the past few years. From edible, playable records to chocolate that doesn't melt, there's a whole world of high-tech chocolate waiting to be discovered.