Strange fruit, anyone know what this is?

[Bro-sephus]

Howdy ya'll, I picked some of this fruit from a picnic area next to a big fruit stand in southern California in December while we were moving down to Missouri from Washington. It's super fragrant, smells almost overpoweringly sweet , and looks kind of like a fig on the inside. Anyhow, I saw it laying all over the ground and figured, "I could probably make likker outta this" so I picked up a shirtfull and stuck it in the cooler in the back of my truck.

I've got no idea what it is, but maybe one of ya'll might have a good idea? Either way, it's gonna ferment and end up in my still!