I whipped up this dish a couple of weeks ago and we really enjoyed how it turned out. The batter turned out so light and fluffy, not too heavy or greasy like most fried food. And the jalapeno mayo with it was a great compliment. I was thinking a red cabbage slaw with carrots tossed in the jalapeno mayo would be really yummy on top as well. I topped the tacos with some green leaf lettuce instead since we had some left over. I like to use what we've got, hate to waste :) Below is the recipe, approximately.
Beer-Battered Fish Taco with a Jalapeno Mayo
2 lbs white fish filet (such as tilapia)
1 1/2 to 2 c flour
2 tbsp cornstarch
1 tbsp baking powder
1 bottle of beer
salt and pepper
4 bunches of scallion
1 c mayo
1/2 a lime
To prepare the fish:
Cut each filet into half lengthwise. I ended up with 14 strips of fish. Season with salt and pepper. Then prepare the batter: whisk the flour, cornstarch, and baking powder together with about 3/4 of the bottle of beer and egg. Add more beer to thin out the batter, add more flour to thicken the batter. The batter should be runny, but thick enough to coat the fish. Dip the fish in the batter, and then fry in oil at 350 degrees F. About 4 mins cooking time, or until golden brown. Transfer to a plate lined with paper towels and sprinkle with salt.
To prepare the mayo:
Chop up the scallions. Seed and dice the jalapeno. Combine the mayo, scallions, jalapeno, and juice of half a lime in a mini food processor. Process until smooth.
On a tortilla shell, lay a fried fish on, and top with the jalapeno mayo and some lettuce. Enjoy!