Smoked Turkey Soup

Carcass and skin from a smoked turkey
1 large onion, chopped
6 ribs celery, chopped
1 pound dried split green peas, washed, but not soaked
Salt and pepper to taste

Cover bones and skin with water in large kettle. Add onions and celery. Bring to a boil; add peas and simmer for 2 to 3 hours.

Remove bones and put the soup mixture through a colander. Return to heat and stir until smooth. Season to taste.

For thicker soup, make a roux of 1 tablespoon flour and 1/2 cup milk, and gradually stir into soup before serving.