3 pounds pork bone-in country-style ribs
1 medium onion, sliced
1/2 cup hoisin sauce
1/3 cup seasoned rice vinegar
1/4 cup soy sauce
1 tablespoon grated gingerroot or 1 teaspoon ground ginger
2 teaspoons sesame oil, if desired
Fresh cilantro leaves, if desired


Place ribs in 3 1/2- to 4-quart slow cooker. Cover with onion slices. Mix remaining ingredients except cilantro; pour over ribs and onion.
Cover and cook on low heat setting 8 to 10 hours or until ribs are tender.
Remove ribs to serving platter; keep warm. Skim fat from surface of juices in cooker. Serve ribs with sauce; sprinkle with cilantro