I know Stone, Ballast Point, Coronado, and Ale Smith, what are some hidden gems in San Diego? Any good local sours or Goses?
distantmantra covered some really good ones already, here's some smaller local places you should check out as well:
Duck Foot Brewing - Next door to Ballast Point and Pure Project. Fairly new but seem to know their craft. Last time I went here they didn't have many experimental beers, just a lot of solid beers for respective styles. I'd recommend just trying all their stuff with a flight. More beers:
http://duckfootbeer.com/category/year-round/
Pure Project - Pretty new and almost feels like they're boarding the craft beer bandwagon (ie: their marketing seems trendy/hip) but they're really solid, check them out for sure, they're next to Ballast Point and Duckfoot. I believe they don't make any same beer more than once so once they tap out of something, that's it (I could be wrong on this so don't quote me on it!) Recommendation: If they still have their Valle Pura Vida i'd say try that, it's a blonde ale with ginger and valencia orange peel. Normally I'd find most beers with ginger go overboard but this one is nice, subtle and not overwhelming. More beers here:
http://purebrewing.org/
Intergalactic Brewing - Closer to White Labs tasting room. They do tap a few sours once in a while (Strawberry Fraking Sour), not sure if they're bottling yet. They're small but they make good stuff. Recommendation: Space Oasis Coconut Porter, tastes exactly like you'd expect, no surprises here, chocolate with tasty hints of coconut. More beers here:
http://www.intergalacticbrew.com/beer
Mike Hess Brewing - They've been getting more and more recognition over the years, expanded quite a bit too. Really like their Red Rye IPA, Habitus and Orange Honey Wheat. I really need to go back here, it's been too long, looking at their website it seems like they've come out with so many new beers for me to try. More beers:
http://www.mikehessbrewing.com/beer/
The Lost Abbey and Toolbox Brewing (this place almost exclusively sells farmhouse ales/sours) are great as well.