Slow Cooker Bavarian Red Cabbage

Name: Slow Cooker Bavarian Red Cabbage
Cuisine: German
Ingredients: 1 small head red cabbage (washed & coarsely sliced); 1 medium onion, chopped; 3 - tart apples (granny smith are good) cored and quartered; 2 teaspoon(s) salt; 1 cup(s) hot water; 1 1/2 tablespoon(s) sugar; 1/2 cup(s) red wine vinegar; 3 tablespoon(s) bacon grease or butter