Kielbasa Soup - With poultry

2 (1 lb) kielbasa , rings, minimum 1 (14 ounce) can chicken broth 1 (14 ounce) can beef broth 1 quart milk , as needed salt and pepper, to taste cornstarch ,[...]

1 (1 lb) package kielbasa (sliced) 1/2 cup chopped onion 2 tablespoons minced garlic 2 tablespoons butter 2 chicken bouillon cubes 4 large potatoes , peeled &[...]