To prepare the grits, add milk, water, and half the butter to a sauce pot. Once it reaches a boil pour the grits in while stirring it, so nothing sticks to the bottom. Make sure to stir every minute or two to prevent clumps. Cook for about 15-20 minutes, or until grits are no longer hard. Once grits are cooked, stir in Gouda cheese and season with Salt & Pepper as needed.
Coat Swai in 1 oz of Cajun Seasoning. Add a little bit of butter and olive oil to sauté pan on medium high heat. Place coated fillets in hot pan. Cook for 3 minutes and flip. Remove the fish from the pan and keep warm.
Add the sausage, shallots, and garlic to the pan, cook for 2 minutes or until garlic starts to brown. Deglaze the pan with stock. Add tomato. Reduce pan sauce for 3 minutes at high heat then remove from heat.
Finish with butter and Cajun seasoning and the juice of one lemon wedge.
Put grits in a bowl, place Swai fillets on top and pour sauce over. Serve with Lemon Wedges