Alejandro's Mexican Food is Brode's Best
This place is open 24 hours, so... there's no excuse to not go right now.
Their Carne Asada Burrito is just 4 ingredients: Tortilla, Asada, Pico, and Guac. You must eat it with the (usually not that spicy) hot sauce, it's just incredible. They also have really fantastic Cheese Quesadillas here. An ice-cold horchata rounds out a phenomenal meal.
One of my all-time favorite restaurants (ok really just a small stand) in Orange County.