Potash
From BiblePortal Wikipedia
Potash [1]
(1): ( n.) The hydroxide of potassium hydrate, a hard white brittle substance, Koh, having strong caustic and alkaline properties; - hence called also caustic potash.
(2): ( n.) The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye), or as a white crystalline (pearlash).
