For the fish:

• 1 pound white fish (cod, snapper, or halibut)
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1 cup all-purpose flour

For the batter:

• 1 1/2 cups all-purpose flour
• 1 large egg
• 1/4 cup cornstarch
• 1 tablespoon paprika
• 2 teaspoons salt
• 2 teaspoons onion powder
• 2 teaspoons garlic powder
• 1 teaspoon black pepper
• 14 ounces beer or sparkling water

For the slaw:

• 1/2 cup shredded red cabbage
• 1/2 cup shredded green cabbage
• 1/2 cup diced tomatoes
• 1/2 cup diced white onion
• 2 small diced jalapenos
• 1/4 cup chopped cilantro
• Juice of 1/2 lime
• 2 tablespoons sour cream
• 2 teaspoons salt
• 1 teaspoon sugar
• 1/2 teaspoon black pepper

For the crema:

• 1/2 cup mayonnaise
• 1/2 cup sour cream
• 1/4 cup chopped cilantro
• 1/4 cup ketchup or sriracha
• Juice of 1/2 lime
• 2 teaspoons salt
• 1 teaspoon black pepper

For serving:

• Tortillas
• Oil for frying