stanchgrain
A hard, firm sheet of very white PARCHMENT , produced
by means of special finishing compositions.
Stanchgrain was an English technique of modifying
parchment to produce a firm, smooth, grease-free
writing surface of uniform whiteness. The
composition used for this consisted essentially of
lime and flour; or lime, quicklime and flour,
eggwhite and milk, all mixed together and spread
on the skin, which was then dried slowly outdoors
in the sun. (291 )