Im a real taco officionado. This dates back to a time when a lone Mexican made it to a distant part of Asia and set up a foodstall! The problem is I cant find the taco of my youth here in SFO. Im not looking for the usual BBQ or grilled meat filling but a stewed meat.Im told this type is very popular in Mexico itself but isnt usually prepared in the US. Anyone have an idea where I could find it?