An American tourist in Mexico might stroll by a restaurant decorated with goat horns and not give the decor a second thought. However, the horns do often signify something special: birria, a hearty mexican stew from the state of Jalisco. And while Mr. Burritos and Los Burritos Lokos may not have goat horns strung across its walls, its chefs do make the spicy, soul-warming treat—but only on weekends.

The name Mr. Burritos should give away the eatery’s other specialty, which comes in nearly 20 varieties—including two vegetarian options and two sizes, baby or giant. Similar spiced meats, such as barbacoa, steak, and carnitas, also fill tacos and chimichangas. People who weirdly enjoy mornings can stop by in the a.m. for a hearty Mexican breakfast of eggs and chorizo. Aside from inviting guests to test their heat tolerances at three locations, Mr. Burritos and Los Burritos Lokos deliver their food directly to doorsteps and can also cater events such as birthday parties and presidential debates.