Cajun-Style Shrimp Gumbo Recipe | Alton Brown

Ingredients

• 4 ounces vegetable oil
• 4 ounces all-purpose flour
• 1 1/2 pounds (31- to 50-count) medium shrimp, raw, whole, head-on
• 2 quarts water
• 1 cup diced onion
• 1/2 cup diced celery
• 1/2 cup diced green peppers
• 2 tablespoons minced garlic
• 1/2 cup peeled, seeded, and chopped tomato
• 1 tablespoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• 1 teaspoon chopped fresh thyme
• 1/4 teaspoon cayenne pepper
• 2 bay leaves
• 8 ounces andouille sausage, cut into 1/4-inch pieces and browned
• 1 tablespoon filé powder