2 pounds sweet potatoes, peeled and quartered
3 1/2 pounds bone-in chicken pieces
1 cup pomegranate juice
1/4 cup sherry vinegar
1/4 cup olive oil
1 tablespoon brown sugar
1 teaspoon ground ginger
4 cloves garlic, crushed
1 teaspoon salt
1/4 teaspoon black pepper
1 bunch green onions, sliced
1/4 cup pomegranate seeds