How To Store Flour, Sugar And Rice For Survival - Survivopedia
Nov 27, 2013xa0· The 4 cups of flour is now hard as a brick (reverts back to powdered flour upon opening the seal) with all the oxygen out. The brown paper bag is pourous enough to allow the Food Saver to vacuum out any air inside the paper bag flour without the flour dust gumming up the Food Saver (which can be a problem).
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