HANDLING CALVES’ STOMACHS OR RENNETS (Copyrighted by B. Heller & Co.; Reprint Forbidden.)
Reading edition
The calf’s stomach is divided into four compartments. The first one is known as the paunch; the second as the honeycomb stomach; the third is called the many-plies stomach and the fourth is known as the rennet bag.
The proper way to handle the rennet bag is to remove it from the balance of the stomach, turn it inside out, and clean with fresh water so as to remove the adhering contents. Great care must be taken not to scrape off or in any way remove the mucous membrane (by this is meant the many folds of thin skin) as this is the part of the stomach which has a market value. Of course the stomach must be gently and carefully washed to remove the undigested portions of food which may be contained therein, as otherwise it would very quickly decompose and become putrid. It would then be of no value whatever for any purpose. After cleansing them, dust the rennet bags all over with finely ground salt, and blow them up after having turned them inside out. Then hang them in a dry place in a current of air so that they will dry as quickly as possible.