Add the Soup Mix packet to 4 cups of water in a large saucepan or dutch oven
then add the tomatoes and sliced smoked sausage to the saucepan
Bring to a rolling boil, reduce heat and simmer for 20 minutes. Stir occasionally
After the gumbo has simmered for 20 minutes, add 1 1/2 lbs of peeled and deveined Shrimp and cook until Shrimp is cooked.
Serve over white rice
Notes
2 cups diced cooked chicken can be substituted for the ShrimpIf using long cooking rice, start cooking the rice according to the package directions while the Gumbo is simmering (before adding the Shrimp). If using Instant Rice, you can wait until after the Shrimp is added to start making the rice.