Potsticker Dumpling Soup

Name: Potsticker (Dumpling) Soup
Ingredients: 1 tablespoon olive oil; 1 small head cabbage, sliced; 1 small onion, minced; 2 carrots, diced; 1 cup sliced mushrooms; 2 cloves garlic, minced; 8 cups chicken broth; 20 frozen potstickers with sauce (such as Ling Ling® Potstickers); 1/3 cup dry sherry, or more to taste; 1/3 cup diced ham; 1 (1/2 inch) piece fresh ginger, grated; 1 (1 inch) piece orange peel, or to taste; ground black pepper to taste; 1/4 cup chopped cilantro