So, I returned and tried a lengua(beef tongue) mini taco. Once again, delicious, with melt-in-your-mouth tender cubes of meat, and the lovely contrast of raw onions and cabbage.
their tortilla chips? not that great...they were too hard, too greasy, although they did have a good amount of salt. I had them with their salsa...very spicy and smoky, but it was more of a bean salsa(not chunky, but a powerful flavor of beans...not my thing).