Hearty gumbo

Ingredients:

3 pounds shrimp, cleaned and peeled
1 (16 ounce) can crab meat
1 quart oysters
2 yellow onions
1 clove garlic
1 green bell pepper
1 bunch green onions
Flour
Oil
Water
Salt and pepper, to taste
2 tablespoons file

Preparation:

In a skillet make light brown roux. Add to a medium or large pot.
Add water, start to boil fast.
Cook vegetables down in skillet with water, until tender. Add to pot and continue to cook.
Add crab meat and cook 30 minutes.
Add shrimp and oysters and cook another 30 to 45 minutes over medium heat.
About 5 minutes before serving, add file and stir.
Serve over hot, cooked rice.