The practice of small potatoes is 1. Buy a smaller one with a uniform size and smooth skin. Wash it clean (remember not to peel it, commonly known as hemp potato). 2. Put more oil in the wok, add aniseed (star anise), then add potatoes, and try to make every potato come into contact with oil. But not too much oil. Normal is good. When the potatoes are a little discolored, add soy sauce, add appropriate amount of bean paste, onion and ginger and stir fry. 3. Add plenty of water and cover with potatoes. Then add the right amount of pepper, according to personal taste. Add salt before cooking. Regarding the amount of salt, if you want to make pickles, put more. Also, when there is little water, remember to turn over the pot frequently, and add garlic paste and monosodium glutamate before closing the pot. Finally, it is emphasized that after the fire boils, it will simmer with a small fire. The longer the better.