Minneapolis has many Mexican restaurants but very few of them are truly veg*n-friendly. The general trend seems to be that most Mexican places have beans cooked in lard and rice cooked in chicken broth and there's a pervasive misunderstanding about the meaning of "vegetarian" (to say nothing of "vegan").
So I appreciate Little Tijuana for not using either of those common, hidden ingredients, and for explicitly stating so on the menu. It certainly set me at ease.
At most Mexican restaurants, even if you speak Spanish, explaining veganism is difficult (which makes sense if lard and chicken broth are considered "vegetarian" in Latin America).
I thought the service was friendly and prompt. My food arrived quickly.
I had a guacamole taco without cheese ($3.50) which was pretty decent, but would have been much better if they made it with mock duck or soy protein (it seems so obvious; I don't understand why more Mexican restaurants don't embrace faux meats).
Fearing the taco wouldn't be enough to fill me up, I also ordered a black bean burger which was, in actuality, a Morningstar vegan patty on a bun ($7.25). No black beans there. It came with fries on the side. This portion of the meal was a disappointment.
I was also disappointed that Little Tijuana charges you for chips and salsa ($2.25) which are normally free at most Mexican restaurants. Their deep-fried chips were okay, but their salsa choices were almost all mediocre. The only one with any quality was the pico de gallo; I recommend avoiding their tomatillo or normal red salsas which didn't taste fresh at all.
My other major gripe is that this place nickel and dimes you for everything. You want lettuce and tomato with your veggie burger? An extra $0.50. You want a three ounce side of guacamole? $2.50. Also, they automatically gave me a larger and pricier glass of Coke, even though a smaller and cheaper size was available (which they didn't tell me about). I didn't like this at all, even if it was only an extra $0.55.
All told, Little Tijuana is not the best place for food, but their pico de gallo with chips is solid, as is their guacamole taco. I like their extra-late hours.
Most critically, this is the only Mexican place that I've been to in the Twin Cities which doesn't use lard or chicken broth, which in itself is a huge plus point in its favor. Little Tijuana keeps my trust whereas most other Mexican restaurants do not.