Cancun 2134 Allston Way/Shattuck Ave.; downtown. Meats here are broiled over open flames, seafood is grilled, and there are plenty of vegetarian specials. Lard and MSG are not used, but purified water is. All vegetarian items can be made vegan by holding the cheese and sour cream. Everything--soft and crispy tacos, burritos, quesadillas, tostadas--is super tasty, especially when tarted up with delicious selections from the extensive complimentary salsa bar, think fruity mango and strawberry salsas, or maybe my favorite, pumpkin salsa. Agua frescas are served in mason jars and usually include my favorite strawberry as well as watermelon and horchata. Seating within the atmospheric room painted with Mexican symbols includes a mixture of large communal tables and smaller tables for two. A large arched window looks out onto the street and brings in mucho light.