Nore's Slumbo

Ingredients

• 5 tablespoons butter
• 2 tablespoons olive oil
• 1 large Vidalia onion, diced
• 3 stalks celery, diced
• 1 green bell pepper, diced
• 2 cloves garlic, minced
• 1 tablespoon file gumbo powder, plus extra for garnish
• 1 bay leaf
• 1 1/2 teaspoons cayenne
• 1 1/2 teaspoons paprika
• 1 teaspoon kosher salt, plus more for seasoning
• 1/2 teaspoon dried thyme
• 1 teaspoon dried Mexican oregano
• 1/2 teaspoon black pepper, plus more for seasoning
• 1 (4.5-ounce) can tomato paste
• 5 cups seafood stock (or 2 (8-ounce) bottles clam juice)
• 1 pound haddock, cut into 1 1/2-inch pieces
• 1 pound shrimp, shells removed, deveined
• 12 oysters
• 1 1/2 cups lump crabmeat, picked over
• 2 tablespoons hot sauce
• 4 cups cooked rice