creamy crawfish bisque

Ingredients

• 4 tablespoons butter, unsalted
• 1 bunch green onion
• 1 cup onions, diced
• 1 cup red bell pepper
• 3 cups heavy whipping cream
• 3 cups half and half
• 2 cups chicken or seafood stock
• 1 tablespoon tomato paste
• 2 pounds crawfish tails
• 1 tablespoon creole seasoning
• 1/2 teaspoon cayenne pepper
• 1 - thyme, leaves
• 1 - bay leaf
• 1 - lemon zest, grated