2. Put the pork elbow into a large bowl, pour in 1 tbsp white sugar, 3 tbsp soy sauce, star anise and half a bowl of water, squeeze the pork elbow to make it tasty, and marinate for 30 minutes.
3. Put the marinated pork elbow in the microwave oven and heat it for 5 minutes, then add 2 tablespoons of cooking wine, ginger slices and onion segments, and turn the pork elbow over and heat it for 5 minutes.
4. Put Xiaotang cuisine into a large bowl, add 3 tablespoons of oil, 1/2 tablespoons of salt and half a bowl of water, and heat it in a microwave oven for 3 minutes.
5. Put the pig's elbow into the dish, pour out the gravy remaining in the bowl, add 1 tablespoon of raw flour and half a bowl of water, mix well, and heat in the microwave oven for 1 minute. Put Xiaotang food around the pig's elbow, pour the heated sauce, and serve!