When I asked for a carne asada burrito, he took out a slab of raw steak and threw it on the hot grill. No re-heating pre-cooked meat here! The flour tortilla was placed on the grill, too. Way better than just being steamed.
I got refried beans (they're really good beans, btw), moist spanish rice, cheese, sour cream, guacamole, tomatoes, cilantro, extra onions, corn, pico de gallo, and shredded lettuce. All for under $8! They have more fixings than any other burrito place. There was also black beans, grilled peppers, olives, and lots more salsas.
I don't think they season the beans or steak, but combined with everything, they don't really need to It just all tastes really, really good and fresh.
I have to admit that the burrito wasn't as flavorful as the ones at Chavez supermarket (my favorite place for burritos and horchata), but it's a solid, heavy, non-greasy and definitely better than La Bamba's next door burrito.
La Costena is a hole-in-the-wall that doesn't have any character, so just grab and go.