We are going on a Culinary tour of California for this month's International Food Challenge. Our host for this month, Joanne T Ferguson who blogs @ What's on the list picked some amazing dishes from California. As Joanne says there are no "official" dishes of California. California cuisine is based on fusion foods, from many cultures and recipes that were adapted throughout the history.
Personally I feel California is a country in itself. One reason being it is one of the largest states in US (FYI: 3rd largest in US and when compared to New Jersey which is in the 47th place, California is HUGE) and the most populous US state. From my working experience in compliance for many years, I know US as a country has many regulations, but California as a state has many many many more complicated regulations.