Los Tios Mexican Restaurant has been serving Houston authentic Tex-Mex for over four decades. Through those years, devoted diners have made Los Tios a family tradition handed down over generations. Favorite tables, favorite waiters and, most importantly, favorite dishes have become rituals with Houstonians who have named Los Tios "Houston’s Best Tex-Mex" time and time again. And why not? Los Tios introduced Houston's first frozen margaritas back in 1975. Made with top-shelf tequilas and fresh squeezed limes, our margarita is widely known to be Houston's finest.