4
In a large saucepan, place the ribs at the bottom and add green onion, ginger, rock sugar, and cola. Bring it to a boil on medium-high heat. Then, add Shaoxing wine, soy sauce, apple cider vinegar, 1/2 cup sweet black rice vinegar, and water. Turn up the heat and bring everything to a boil, then add salt and cinnamon powder to taste.