Potsticker (Dumpling) Soup
1 (1 inch) piece orange peel, or to taste 1 (1/2 inch) piece fresh ginger, grated 1 cup sliced mushrooms 1 small head cabbage, sliced 1 small onion, minced 1 tablespoon olive oil 2 carrots, diced 2 cloves garlic, minced 20 frozen potstickers with sauce (such as Lin… 8 cups chicken broth ground black pepper to taste ¼ cup chopped cilantro ⅓ cup diced ham ⅓ cup dry sherry, or more to taste