Add onion, celery and capsicum to the roux. Stir for 5 minutes until softened.
Add garlic, andouille sausage and chicken. Cook 10 minutes.
Add tomatoes, chicken stock, creole seasoning and bay leaves. Stir well to incorporate the roux.
Bring to a simmer. Cover with the lid askew. Cook 45 minutes, stirring every 15.
Taste. Adjust salt, pepper and cayenne.
Add prawns. Simmer 3-4 minutes until just pink and curled.
Stir in spring onions and half the parsley. Off heat.
Serve over rice. Top with remaining parsley and a few drops of Tabasco.