Storing Corn Meal and Flour
(Hot Springs, Arkansas, USA)
I want to store whole grain corn meal and flour. What do I need in order to keep it from going rancid?
Both can be stored for 5-10 years if sealed in Mylar bags with oxygen absorbers. The lack of oxygen will postpone rancidity.
I have read that whole grain corn is a better option than corn meal, has a longer shelf life and won't go rancid as fast. But you must have a good grinder that will accommodate grinding corn - it's tougher than wheat.
A good practice is to put both the corn (or corn meal) and the flour into the freezer for a week or two before sealing in Mylar with O2 absorbers - to kill any larvae from weevils that are naturally in grains.