Get thee to the Grand Central market, in the heart of downtown LA. It’s a farmer’s market of sorts, with vegetable stands, butchers, spice vendors, along with some unbelievably good food stands. You can find fish tacos, mexican food of every kind, and one of my all time favorite foods, The papusa (an El Salvadorian treat).
Sorry, last time I went there is was totally roach infested. I can’t recommend it anymore.