The job of an ash burner (German: Aschenbrenner) or potash burner (Pottaschbrenner) was to burn wood for industrial purposes. From the ashes, the potash needed in dyeing, in soapmaking and in glassmaking could be made by leaching and boiling (hence the term "potash boiler" or Pottaschsieder).
The job of an ash burner (German: Aschenbrenner) or potash burner (Pottaschbrenner) was to burn wood for industrial purposes. From the ashes, the potash needed in dyeing, in soapmaking and in glassmaking could be made by leaching and boiling (hence the term "potash boiler" or Pottaschsieder).
Source: Wikipedia "Ash burner" · CC BY-SA 4.0
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