Blackened fish tacos with vibrant chipotle-lime sauce, fresh cabbage, and crumbled cotija cheese - I

Ingredients

• 1/2 lime, juiced
• 1/2 cup sour cream or Greek yogurt
• 1/2 cup mayonnaise
• 1 teaspoon garlic salt
• 1 chipotle pepper in adobo, finely chopped
• 1/2 cup chopped fresh cilantro
• 1 tablespoon garlic powder
• 1 teaspoon paprika
• 1 teaspoon onion powder
• 1 teaspoon cayenne pepper
• 1 teaspoon dried thyme
• 1 teaspoon dried basil
• 1 teaspoon dried oregano
• 1 teaspoon salt
• 1/2 teaspoon ground black pepper
• 1/2 cup (1 stick) unsalted butter, melted
• 2 pounds white fish fillets (such as cod or snapper), cut into 1-inch thick pieces
• Corn tortillas, warmed
• Shredded cabbage
• Chopped fresh cilantro
• Crumbled cotija cheese
• Lime wedges