取口径约35cm的小生铁锅一口,白矾1公斤,置锅内以武火加热溶化,待煮沸2小时,散发大量水气,并开始凝固(但断续还有气泡鼓起冒出水气)时,改用中火煅1小时,至完全凝固无水泡鼓出后,改用文火,并将锅上加一铁盖,再煅约1小时,至全部松泡呈白色蜂 Take a 35cm skew iron pot, 1 kilogram of white wolfberry, set the pot to heat and melt, wait until it boils for 2 hours, distribute a large amount of water vapor, and start to solidify (but there are still bubbles when bubbles rise) , Use medium heat forging for one hour, until the complete solidification does not occur, use a slow fire, add an iron lid to the pan, and then calcine for about 1 hour until all loose foam is white bees.