Tacos Al Vapor are delicious (cheek, lip, and tongue) were delicious - I do stay away from la Cabeza (fear of Mad Cow) but I'm sure those are delicious too.
The first time I stopped and ate here, I fell in love with the hot sauce, very HOT. I'll be honest, some tears did drop from my eyes, but it was well worth it. They sell nothing but Tacos al Vapor.