Union Market is already overflowing with food choices, but Apapacho Taqueria needs to be at the top of your list. The owners are veterans of Maiz 64, one of our favorite Mexican spots in the city. But unlike Maiz 64, Apapacho is more of a fast-casual, grab-and-go kind of place that’s great for a quick lunch or casual weeknight dinner. Get the tacos de suadero—slow-cooked beef simply topped with onions and cilantro—and the Baja shrimp tacos, which come with a zesty salsa mayo that brings the heat. The vegetarian options, like a cheese and potato quesadilla, also hold their own.