Potato starch is different from raw flour. Potato starch is the starch extracted from potatoes, while raw flour is the starch extracted from many plants, such as corn, potatoes, pueraria lobata and so on. Potato starch and raw flour are also different in use and taste. Potato starch is easy to gelatinize during cooking and is suitable for making soup, sauce and cakes. Raw flour, on the other hand, is not easy to gelatinize, so it is suitable for barbecue, fried chicken and other cooking methods, which can increase the crispness.