Cabbage Goulash

1 pound bulk pork sausage

1 pound ground beef

1 large onion, chopped

1 can (28 ounce size) chopped tomatoes, liquid reserved

1 can (6 ounce size) tomato paste

2 tablespoons vinegar

1 tablespoon chili powder

1 teaspoon garlic powder

1/4 teaspoon dried crushed red pepper, optional

10 cups shredded cabbage