What a great find! It's a literal shack--no reservations, but they did have some outdoor seating but makes for great take out. The entire place is gluten free--not hard to do with Mexican food but such a treat as no worries about cross contamination. Even the churros were gluten free, and quite good. We avoided the chorizos due to spicing concerns with a mustard allergy, but there was no mustard in the simpler meats etc. There is fish available and one dish seems to have shrimp as an option (the tamales, which were whole corn and the filling put on the outside, rather than having different filled ones available) but no other shellfish on the menu and we didn't have any issues avoiding/no cross contamination problems. A great treat for a quick stop--there are two locations, we went to the one in Glendale after touring Pasadena.
— Yes, the establishment is dedicated gluten-free
— Excellent