Raising agent (5)
'raising agent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for yeast that I've seen before include "Fermenting agent" , "A raising agent in baking" , "Fungus; food supplement" , "Brewing agent" , "that baker needs" .)
'raising agent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for baking powder that I've seen before include "Culinary substitute for yeast" , "Cake raising agent" .)
'raising agent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for leaven that I've seen before include "It makes dough rise" , "Something like yeast" , "Yeast or other raising agent" , "Substance added to dough to make it rise" , "Substance that produces fermentation in dough" .)