There are as many taquerias as there are mountain peaks around Denver, but as with the Rockies, a few rise above all the rest. El Taco de Mexico is one of them. The women behind the counter are as notoriously no-nonsense as the food is simple: tacos and burritos alike serve as lessons in Mile-High Mexican 101, with their perfectly cooked meats and stellar sauces—namely the smokiest of salsas and purest of green chiles, thin and smooth. Throw in an extra-cinnamony horchata to wash it all down, and you’ll still leave with nearly as many pocket pesos as you came in with.