Ingredients: 2 potatoes and 200g beans.

Accessories: oil, soy sauce 1 spoon, oyster sauce 1 spoon, sugar 1 spoon, starch 1 spoon.

Steps:

1. Potatoes and beans are ready. This kind of long bean or kidney bean will do.

2. Wash the beans and break them into pieces by hand. Don't cut them with a knife. Peel the potatoes and cut them into potato chips for later use. Don't cut the potato chips too wide, but cook them carefully.

3. Soak the cut potato chips in water and soak the starch inside. It's not easy to burn when frying.

4. Next, mix a sweet and sour juice, put soy sauce in the bowl, and add a spoonful of sugar.

5. Add another spoonful of oyster sauce, 2 tablespoons of white vinegar, 1 tablespoon of starch and 2 tablespoons of water.

6. Stir all the seasonings evenly with a spoon, thus making the sweet and sour juice.

7. Pour a little oil into the pot, first put the beans and potato chips in, and fry until the surface of the potato chips is brown and the beans are cooked. In fact, this step is to fry these two ingredients.

8. Pour in the prepared sweet and sour juice, then stir and collect the soup.

9. Finally, when the soup thickens and the surfaces of potatoes and beans are covered with juice, you can turn off the fire.

10, just stew beans with potatoes.