The latter, which appeared in the Tang Dynasty, is to decoct the brine extracted from the ash or alkaline earth in flat plates.

 
  • “煎鹽”則指提取柴灰或堿土中的鹵水,用淺而闊的盤(pán)熬干以制取鹽,這一專(zhuān)稱(chēng)唐代始見(jiàn)。
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