I realize this thread is a few months old but thought I’d share…
Living in Southern California is a blessing and a curse. I won’t bore y’all with the negatives but will say that one of the blessings is the abundance of great Mexican food. Besides Carne and Apollo Asada tacos/burritos, fish tacos can be found at most fast food places as well as walk-in dining restaurants. One local fast food chain specializes in “Baja” fish tacos which are made of batter-fried fish, crisp cabbage, white sauce, handmade salsa served on a corn tortilla with a wedge of lime on the side. The white sauce is nothing more than 1/2 cup mayonnaise and 1/2 cup plain yogurt mixed together and placed in the refrigerator to meld. The salsa is finely chopped tomatoes, onion, cilantro and a pepper of choice, we like Jalapeños or Serranos.
Tortillas are heated both sides on an oiled griddle and plated. The fried fish is placed in the middle, shredded cabbage put on and then the white sauce and salsa added. You can then add a squirt of lime and/or hot sauce to complete your taco.
I’ve had fish tacos south of the border many times and the simple version above is how they are made on the Baja coast as well as the Pacific.
Hope this helps…Semper Fi