What was the main food source in old California?

Question

What was the main food source in California during the Spanish and Mexican periods? I'm expecting it was either corn or wheat, but I don't know which.

Answer 1

Here's an interesting article on the topic, from the Santa Barbara Independent newspaper. It's titled, "What Did the Early Spanish Settlers Eat?" and should answer your questions:

The primary crop was wheat, in addition to significant amounts of corn, beans, barley, and peas. As the mission’s water system developed, more sophisticated irrigation techniques were possible, making for increased agricultural yields.