Clam Chowder with butter

2 (6 1/2 ounce) cans minced clams 1 cup onion , chopped 1 cup celery , diced 2 cups potatoes , diced 3/4 cup butter 3/4 cup flour 1 quart half-and-half 1 1/2[...]

1 1/2 teaspoons salt 1 cup chopped celery 2 cups diced potatoes 1 cup chopped onion 2 (6 1/2 ounce) cans chopped clams 1 quart half-and-half 2 tablespoons[...]