Method:For coction twice:First,Adding 10 times volume of water for coction two hours;Second, Adding 10 times volume of water for coction an hours;As optimum technology condition.

• 方法:以煎煮两次,第一次加水10倍量,煎煮2小时,第二次加水8倍量,煎煮1小时为最佳工艺条件。