The fast-food chain Taco is a popular restaurant that serves Mexican-style cuisine. The name of the chain is an acronym for 'Tortillas and Cheese Only', which is a reference to the main ingredients used in their signature dish. The DEL in the crossword solution stands for the chain's slogan, 'Delicious Every Time'. Taco has been around since the early 1970s and has become a staple in many communities across the United States.