step

1. Prepare the ingredients, cut the steak with potatoes and onions into small pieces, add a spoonful of soy sauce, a spoonful of cooking wine and half a spoonful of starch to the beef, and marinate for 15 minutes.

2. Mix a sauce, add a spoonful of soy sauce, a spoonful of oyster sauce, half a spoonful of soy sauce, a proper amount of sugar and black pepper, and add half a bowl of water to mix well.

3. Put oil in the pot, stir-fry the steak until it changes color and then take it out for use. Add potatoes, fry until golden brown on both sides, add onions and stir-fry, pour in steak and sauce, and simmer until the soup is thick. Be careful not to boil potatoes.