1. Take walnut kernel, remove endothelium, fry it in warm oil and break it into small pieces for later use.

2. Slice pork tenderloin, cut into square slices, marinate with a little salt and wine for a while, and wrap walnuts in the slices one by one to form small balls.

3. Mix 1 eggs with appropriate amount of starch to form an egg paste, wrap the meatballs with walnuts one by one, and fry them in a hot oil pan.

4. Take another pot, add a little oil to heat it, add a little onion and ginger to fry it, add a little water, add a little soy sauce, sugar, vinegar and starch to make sweet and sour juice, pour the fried walnuts into the juice in the pot, and turn the spoon to wrap it evenly.