Carniceria - Hollywood/Los Feliz/Silverlake/Echo Park
El Rancho Market on Alvarado just North of Sunset is a pretty good one. I pick up their carne asada for the grill a few times a year and everyone loves it. They will prepare it for you if you ask. They also have fantastic (and super hot) fresh salsas.
El Rancho Market
1115 N Alvarado St, Los Angeles, CA