Chili Chicken Wings

Name: Chili Chicken Wings
Ingredients: 1 1/2 cups rice or cider vinegar; 1 cup sugar; 3/4 cup ketchup; 6 tablespoons Chinese plum sauce; 1 tablespoon hoisin sauce; 2 tablespoons finely chopped garlic; 2 tablespoons (or to taste) finely chopped fresh red, jalapeño or serrano chili, with seeds; 3 tablespoons finely minced fresh ginger; 1 teaspoon salt, or to taste; 1 tablespoon cornstarch mixed with 1 tablespoon cold water; 30 chicken wings (tips removed), rinsed and patted dry; 2 tablespoons chopped cilantro, for garnish