San Francisco is known for both its seafood and its sourdough bread, for this reason all over the bay you can taste of the best Clam Chowder in the world. The Clam Chowder of San Francisco is a fish soup, usually based on clams and potatoes and served in a delicious bowl of sourdough bread. The word Chowder, in fact, comes from the Latin word caldaria, which means more or less "place or container to heat things."
This dish is a MUST have during your visit in San Francisco.