Slideshow: Amazing Mexican Food at El Gran Mercado Flea Market in Austin, TX

Tacos: Pastor, Tongue, and Tripe
Tacos: Pastor, Tongue, and Tripe

The sign declared "tacos de trompo," and then I saw it—the spinning pork spit that hints at good al pastor tacos. I also ordered tripe and tongue. Although the pastor was flavorful and crispy, the tongue, which had been cooked briefly on the griddle with red chile flakes, stole the show. The tripe was also surprisingly good, and there was no hint of the musty flavor that often accompanies organ meats.

Pupusas
Pupusas

This Honduran pupusa truck offers a long list of filling choices like loroco flower, chorizo, and chicharrones. My favorites were the diced zucchini and the refried beans. Take a seat after ordering, and they'll deliver your food to the table. Using tongs, reach into the giant communal jar of pickled cabbage and drizzle the pupusa with a liquidy green salsa served from a pitcher.

Aguas Frescas
Aguas Frescas

It's hard to choose between all of the varities of aguas frescas, like lime, tamarind, or cantaloupe, so I selected one with plenty of fresh fruit floating around. The watermelon agua fresca tasted just like pure, liquified fruit, and it was the perfect refreshment after browsing outside on a summer afternoon.

Huaraches
Huaraches

I selected a huarache de chorizo from one truck specializing in antojitos. Although it was made with fresh masa, the bottom layer wasn't thick—it was more like a cross between a soft and hard taco shell. The masa was spread with a thin layer of refried beans, and then topped with plenty of chorizo, lettuce, several large slices of avocado, and drizzled with crema.

Mexican Hot Dogs
Mexican Hot Dogs

This small market also sells "hot dogs en el estilo Mexicano," also known as Sonoran hot dogs. Hot dogs are wrapped in bacon, placed in a poppy seed bun, and topped with mayonnaise, ketchup, mustard, onions, tomatoes, and jalapenos.

Beef and Goat Barbacoa
Beef and Goat Barbacoa

Two taco trucks at the market specialize in goat and beef barbacoa, and they're both equally good. The beef barbacoa is greasier, while the goat is slightly leaner and flavored with chiles and cloves. All of the tacos are served on fresh tortillas.

Mango on A Stick
Mango on A Stick

You can't leave the market without a whole mango on a stick rolled in salt, lime juice, and chile powder.