SC - manual de mujeres #62,73-76 and a question about pans

[Elaine Koogler]

Hartshorn, maybe.  I came across one reference to it as a (possible)
leavening agent.  Other than that, I haven't found any chemical leavens.
Chemical leavens start appearing in the 18th Century.  I don't remember
potash being referred to as a leaven, but pearl ash (potassium carbonate,
one of the types of potash) is.

In the Middle Ages, cooks appear to have depended on yeast (ale, grape must,
sourdough, etc.), whipped in air, and oven spring to lighten their bake
goods.

Bear



> Wasn't potash used as a leavening during the Middle Ages?  
> 
> Balthazar of Blackmoor