I forget what kind of sandwich this was, except that it was spicy. I’m pretty sure it was a torta de chorizo. The sausage was spicy and delicious. The sandwich was huge and i ended up not finishing the bun.
I ordered it Tacos El Gavilan http://www.tacoselgavilan.com/menu/
It is a busy taco shop on Sunset Boulevard and Highland.
The pickles (las aceitunas) were tasty.
There are plenty of decent taco shops like this all over Los Angeles. I would return.