This question is simple. First of all, peanuts were fresh in those years. Wash them, add aniseed and salt (you can add more appropriately), and add enough water. After the fire comes to a boil, cook over medium heat 15-20 minutes. Turn off the fire and don't open the lid. You can eat it in an hour. Attention; Add enough boiled peanuts at a time, and the water should not exceed peanuts. Peanuts can be rotten or dried. These can be mastered by yourself.