Diana s Restaurant in El Monte, Calif., is one of seven restaurant, delicatessen and tortilleria subsidiaries of Diana s Mexican Food Products. Diana s Mexican Food Products is a family Mexican food production business that opened in the late 1960s. Diana s produces several kinds of corn and flour tortillas for wholesale, as well as supplying homemade tortilla chips to large casino clients in nearby Las Vegas and Japan. A daughter of the company s founders, Diana made her own name as the first Hispanic Miss California in 1987 and later as Miss USA World. Diana s Mexican Food Products is headquartered in Norwalk, Calif.