Need a peanut butter-filled pretzel? Trader Joe's is your guy. Cooking something that doesn't call for peanut butter-filled pretzels? Well, you probably need to go somewhere else, especially if that something involves, say, fish balls, fried pork rind, or frozen paratha.
For those times, you'll probably want to consult this: our guide to LA's best ethnic supermarkets, complete with what they're stocking and what to munch on while you're browsing.