Peel potatoes, cut them into thick strips with a thickness of 1 cm, soak them in clean water for 10 minutes, and drain. Take a deep frying pan with a thick bottom and fill one third of the oil, heat the oil to 160℃, fry the French fries in the pan for 4-5 minutes or until the skin is golden, take them out and put them on kitchen paper (oil-absorbing paper) to drain the oil on the surface.

Before eating, heat the oil to 180 degrees, and then fry the French fries until the skin is golden and crisp.

Actually, I saw this translated from an English cookbook, which should be authentic.