Optional toppings: Diced tomatoes, sliced avocado, pickled red onion
Instructions
In a small bowl, combine the first 7 ingredients. Refrigerate, covered, at least 30 minutes. Meanwhile, in an electric skillet or deep-fat fryer, heat oil to 375°. In a shallow bowl, combine flour, baking powder, salt and cayenne pepper. Stir in beer until smooth. In batches, dip fillets in batter; allow excess to drip off.
Fry fish in batches until golden brown, 2-3 minutes on each side. Drain on paper towels. Serve in tortillas with cabbage mixture. Top with tomato, avocado and onion, if desired.