2. Potatoes are rich in starch, and if you fry them directly in the pot, the fried potatoes are soft and not flavorful. So before frying in the pot to dilute the starch inside. Cut the potatoes in a pot, add the right amount of water, water should not exceed the potatoes, and then add 2 spoons of salt. 3. potatoes in salt water soaked for 30 minutes, soaked after the fries drained in the refrigerator in the freezer for 30 minutes. After frozen, take out the fries and sprinkle them with cornstarch. 4. Mix them well with your hands, so that each fries can be evenly coated with a layer of cornstarch. 5. Drain the oil in the pan and add the right amount of oil. The oil should be relatively more, wait for the oil in the pan to become 70% hot, then put the cornstarch-coated fries into the frying pan, gently pushing them when putting them in to prevent them from sticking together. Subsequently, do not turn when frying, the fries will become soft during the frying process, if you turn them again, it will be easy to break.6. The fries in the frying process will slowly become crispy, slowly shrinking, until both sides of the state of browning, turn the crisp sound first fish them out. The process of deep-frying wait a little longer, 15-20 minutes or so, be patient.