Short-term storage: fresh Sophora japonica is dried and put into plastic bags, tied tightly and put in the refrigerator, which can be stored for one week. Sun-dried preservation: wash fresh Sophora japonica with clear water, blanch with hot water, and dry in a cool and ventilated place. Then put the dried Sophora japonica in a plastic bag, tie it tightly, put it in a dry place, and take it out and blanch it in water when you want to eat it.

1. Short-term storage: fresh Sophora japonica flowers are dried, put into plastic bags, tied tightly and put into the refrigerator, and can be stored for one week.

2. Dry storage: Wash fresh Sophora japonica with water, blanch with hot water, and dry in a cool and ventilated place. Then put the dried Sophora japonica in a plastic bag, tie it tightly, put it in a dry place, and take it out and blanch it in water when you want to eat it.