After my mom passed away, my aunt used to make us tons of tacos de papa dorados—basically mashed potatoes inside a tortilla either folded or rolled up like a flauta and fried—and leave them in big bags in the fridge. My friends and I would grab a few, microwave them, smother them in tart, fresh, bright-green tomatillo salsa, and wolf them down while watching episodes of Richard Bey. It’s a casero-style (homemade) snack, sort of like a Hot Pocket. You wouldn’t really see these on a menu anywhere. So when I first got the cart, I figured why not make this taco with a few modifications.