Lonely Planet

"Locals in the know flock to this clean-cut, semi-outdoor joint decked out in white and red. Tacos include delicacies like tender lengua (tongue)."

Greer`s

"We were blown away at how well you can eat for very little money. One of the first stops was Tacos El Gordo, with bright red tiles known for its carne asada tacos. If you're feeling adventurous, go for lengua (beef tongue) tacos smothered in salsa verde and costing no more than a few dollars for large portions."