Dried bamboo shoots are processed from fresh bamboo shoots. Common varieties are magnolia slices, dried bamboo shoots and smoked dried bamboo shoots. Magnolia slices are steamed with winter bamboo shoots and baked with charcoal fire, and the color is milky white or light yellow. Drying bamboo shoots is made by cooking bamboo shoots and drying them in the sun. The color is dark yellow. Smoked dried bamboo shoots are made by cooking bamboo shoots and then smoking them. The color is black. The above varieties are magnolia slices, followed by dried bamboo shoots and smoked dried bamboo shoots.

Because of different processing methods, the method of soaking dried bamboo shoots is different. Otherwise, it will affect the quality of finished dishes. Now, various foaming methods are introduced as follows:

Magnolia slices are not suitable for boiling water because of their soft texture. Generally, they are soaked in cold water 1 day. In order to prevent mildew and insects, Magnolia officinalis slices should be smoked with sulfur during processing, and the odor can be removed after soaking. After cold soaking in water, soak in warm water for half a day and cook.

Sun dried bamboo shoots. Soak in warm water for 2 hours, then cut off the old part and cut it into thin slices. Soak in warm water for half a day.

Smoked dried bamboo shoots. Because of its strong smoke smell, it is boiled in boiling water 1 hour, taken out and soaked in clear water for about 48 hours, and changed with clear water twice. Finally, cut it into pieces or shreds, and then soak it in warm water for a long time, so there is no smell of smoke.