Con Huevos serves up the breakfast taco staples and more. The taco itself, presented in a nixtamal corn tortilla that’s been passed through hot fat, is dominated by a generous portion of sirloin fajita. Guacamole, queso fresco and onion round out the cast of characters. If the nixtamal corn tortilla was very good, the same masa mixed with spinach and nopal was sensational. At Con Huevos, the mixture is a modest combination of refried beans, queso fresco and a salad of tomato and lettuce enlivened with marinated red onion.