We cater (925-683-9815), We deliver. Una Mas Mexican Grill is a fusion of traditional Mexican dishes with an authentic and modern flair. Our Food is Always Tasty, Always Fresh, Always Healthy. From our popular Signature Fajita, Burritos, Tacos, Foghead Burrito (char-grilled chicken, with Tequila BBQ sauce, guacamole, rice, black beans, cheese, sour cream, roasted pasilla & corn salsa all wrapped in a warm chile-tomato tortilla) to our Margarita Salad; —everything we make has a distinctive flair that makes Una Mas a great place to eat!