"It's a Dallas rite of passage to try the (frozen) margarita that started it all. At least sort of. Mariano’s owner Mariano Martinez may not have invented the cocktail, but he is responsible for the margarita’s most exciting innovation – the frozen margarita machine. The original machine sits in the Smithsonian, but this longstanding spot still serves up a fine margarita. Jazz it up with jalapeno-infused tequila or a floater of sangria." - Eater Staff