Soap ingredient
'soap ingredient' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lye that I've seen before include "Alkaline liquid" , "caustic liquid" , "Strongly alkaline wash" , "Alkaline solution used for washing" , "Branch railway" .)
'soap ingredient' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tallow that I've seen before include "Contributor to soap" , "Animal fat used in making soap" , "Melted, clarified animal fat" , "Soap ingredient" , "burning fat" .)