Slice potatoes, soak them in clear water for about half an hour, or wash off starch with clear water; 2.

Knife beans are broken; 3.

Heat the oil pan to 80% until the garlic is fragrant, stir-fry the potato chips until translucent, then stir-fry the kidney beans slightly, add water and cover with a small bowl of fire for five minutes (add three minutes if you like rotten); 4.

Open the lid with a small fire, add Laoganma, add aging and soy sauce. Stir fry for two minutes.