Once you’ve reached the color you desire, add the chopped veggies and a pinch of salt and pepper. Cook another 3 to 5 minutes then add the liquid (2-3 quarts of water or stock)
Add spices to taste, two bay leaves, one tsp gumbo file` and one capful of liquid crab boil which is about a fourth teaspoon. Cover and let simmer on med/low for 20 minutes. Add the crab, cover and cook another 30 minutes. Add oysters and shrimp, cover and cook another 10 minutes. Enjoy !!