Fresh Amomum villosum needs 2 kg to dry 1 kg 1 dried Amomum villosum. In this process, the evaporation of water will lead to the weight reduction of fresh Amomum villosum. Therefore, the weight of a catty of fresh Amomum villosum will be reduced to about half a catty after drying, so it takes about 2 catty of fresh Amomum villosum to get a catty of dried Amomum villosum.
Amomum villosum is the dried and mature fruit of Amomum villosum, green shell sand or Hainan sand. In summer and autumn, the fruit is harvested when it is ripe, and then dried or dried at low temperature.