Shrimp Creole - With greens

2 1/2 lbs raw shrimp , peeled and deveined 1 1/2 tablespoons bacon grease or 1 1/2 tablespoons lard 1 1/2 tablespoons flour 1/2 cup onion , chopped fine 1/3[...]

1 1/2 cups onions , chopped 1 cup celery , finely chopped 1/2 of a large green pepper , finely chopped 2 garlic cloves , minced 1/4 cup butter 1 (15 ounce)[...]