1, blanching method: blanch the picked Toona sinensis buds with boiling water, drain the water, put them in fresh-keeping bags, seal them, and finally put them in the refrigerator for freezing, so that they can be eaten and taken at any time. This method can be preserved for several months, but the delicate flavor of Toona sinensis buds will not be reduced;

2. Freezing method: The fresh Toona sinensis buds are directly wrapped with plastic wrap and then frozen in the refrigerator, but this method is not as nutritious as the blanched Toona sinensis;

3. Pickling method: blanch the fresh Toona sinensis buds with boiling water, drain the water, sprinkle with salt, mix and put them in a container, either in the shade or in the refrigerator. The preserved Toona sinensis buds contain nitrite and need to be blanched again when eating.