
9
A number of commercial devices and materials are 
availabletoaidineliminatingfatimpurities.Thereare 
several excellent models of pressure lters as well 
as strainer-type lters, which, if used regularly, will 
prolong life of fat. 
However,  no  purication  device  will  renew  broken 
down or rancid fat or put new life into it. Once you 
haveallowedfattobreakdownitbecomesunsuitable 
for frying — in fact browning is impossible. 
In addition to ltration, you can prolong the usefulness 
offatbysweeteningitwithfreshcompoundeveryday 
- replacing about 15% of the bulk you started with. If 
you do enough frying so that normal absorption of fat 
infoodamountsto15%to20%ofthecapacityofyour 
kettleeveryday-thenyoucancallthatyourturn-over 
food. It means you can add the recommended 15% 
of fresh fat without discarding any of the old.
In three to six months you may spend as much for fat 
as you paid for your kettle. So fat is an item you want 
to know all about; how to select it; how to manage it. 
Themoreproductionyoucan get from each pound of 
fat, the more protable your frying operation will be. 
To get a high rate of production per pound of fat you 
have to avoid two things. One is early breakdown 
and spoilage of the compound so that you have to 
throw it away before it does enough work to "earn its 
keep." The other is excessive sponging up of fat by 
the food being fried. 
The main cause of fat breakdown is excessive heat. 
On the other hand abnormal absorption is caused by 
frying too long at too low temperatures. One answer 
to both problems is exact control of heat — so that 
fat neither smokes up nor soaks up. 
Ofcourse,nofat"keeps"forever.Notonlyheat,butair 
andmoisture,saltparticlesandcrumbsoffoodworkto 
breakitdown.Butyoucanslowupfatdeteriorationby 
maintainingpropertemperaturesandbydrainingyour 
kettle, ltering or straining the fat once or twice a day 
and by keeping the kettle itself absolutely clean. 
1. Choose a fat that does not break down quickly. 
Hydrogenated shortening, corn, and peanut 
oils are less likely to break down under high 
temperatures. 
2. Do not fry foods at temperatures above those 
recommended. The higher the fat temperature, 
themorerapidtherateoffatdeterioration.Above 
400°F fats quickly deteriorate. 
3. During short intervals between frying, turn the 
heat down. Do not keep heat on for long 
periods between batches. 
4.  Keep fat clean. Strain or lter daily or at end of 
each shift. Add at least 15% fresh fat to your 
kettle daily. 
5. Atleastonceaday,coolasmallamountoffatand 
taste it to see if it has picked up foreign avors. 
6. Discardfatthattendstobubbleexcessivelybefore 
food is added. 
7. Donotoverloadbaskets-piecesshouldnottouch 
whenfrying.Shakebasketstopreventfoodfrom 
sticking together. Fry similar sizes together. 
8. Neversaltfoodsdirectlyoverfat,saltinfatreduces 
its life. 
9. Raw, wet foods, such as potatoes and oysters, 
should be drained or wiped dry before frying to 
extend the life of the frying fat. Have foods to be 
fried at room temperature. 
10. Keep fat temperatures below smoking point to 
minimize frying odors. 
10 POINT PROGRAM
TO PRESERVE FAT AND PRODUCE THE FINEST FRIED FOODS
CARE OF FAT