Hot oil. When frying bean paste, frying with hot oil can make the bean paste heated evenly, and at the same time, it can also avoid burning the bean paste. In addition, hot oil can evaporate the water in the bean paste, thus making the bean paste more crispy. If you use cold oil when frying bean paste, it is easy to cause the bean paste to paste the pot, and the fragrance of the bean paste is also incomplete.