Awesome looking burgers.
Clonesmoker, nice pickled peppers on there. That burger looks like an experience.
I’ve never heard of a California burger...however, I’m sure I’ve stumbled across a burger with avocado on it...and 9 times out of 10, if something has avocado added to it then the restaurant will call it California something.
Growing up my mom always made build-your-own burgers. She would grill the burgers and have a platter of sliced iceberg lettuce, tomato, and onion. Ketchup and mustard always available. I had a phase where I put steak sauce on my burger.
These days, my perfect burger is griddled and topped with melted American cheese, onion, tomato, pickles, and ketchup.