Heat the oil in a large heavy pot over medium heat, then stir in flour to make a dark gumbo. This will take 45 minutes. To the gumbo add the onions, bell peppers, green onions and parsley. Slowly add 1 cup of stock. Stir in Worcestershire sauce and garlic. Then sausage and wine. Stir in pureed beans, salt and hot sauce. Reduce the heat; simmer for 2 hours.