Taqueria El Zamorano is Brode's Best.
Get the Beef Cheek taco, the Fish taco, the Carnitas Taco, the Asada, or the Birria taco. Do not get a burrito, a quesadilla, or a torta - this place is all about the tacos, and honestly everything else is just ok. They have phenomenal Aguas Frescas here as well. The corn tortillas are hand made.
WARNING: There is another Taqueria El Zamorano in Costa Mesa. Apparently it was sold and became a vegan taco place under new management. I've been told it is "not delicious". You want to head to original one, in Santa Ana.