According to an online search, there is something called "San Francisco chowder," but it's actually a New England chowder served in a sourdough bread bowl, so the incorporation of sourdough bread, very popular in California, is what it makes it "San Francisco." Sounds dubious, but there are apparently some restaurants in SF that have been serving that for decades.
So is "California cuisine" the same as "spa cuisine?" To me, all these new additions to the food lexicon are amorphous and almost meaningless, since they seem to mean different things to different people. Not like classic French