Family-Meal Fish Tacos Recipe

Ingredients

• 2 tablespoons chile powder
• 2 tablespoons garlic powder
• 2 tablespoons paprika
• 1 tablespoon ground cumin
• 1 teaspoon red-pepper flakes, or to taste
• 1 1/2 pounds firm white fish fillets, like cod or red snapper, skinless
• Kosher salt and freshly ground black pepper to taste
• 1 1/2 cups sour cream
• 2 chipotle chilies in adobo, finely chopped, or more to taste
• 12 white corn tortillas
• 3 tablespoons neutral oil, like grapeseed or canola
• 6 scallions, trimmed and cut into 4-inch lengths
• 5 radishes, trimmed and sliced thin
• 8 ounces Cheddar cheese, grated
• 2 limes, cut into wedges