STEP 1 In a medium bowl combine flour, baking powder, spices, beer and egg yolk and blend. Cover the batter and refrigerate.
STEP 2 Cut fish into oblong slices and coat with batter.
STEP 3 In a medium frying pan, heat oil to 375 ¿ree; F.
STEP 4 Meanwhile, combine mayo, cilantro and lime juice. Thinly slice avocado.
STEP 5 Once the oil is hot, add fish and fry for four to five minutes on all sides. While the fish is cooking, steam the tortillas.
STEP 6 To prepare, place fish, avocado, cabbage and shredded cheese on steamed tortilla. Add sauce to taste, squeeze a lime and fold.