Flour has always been essential to a home cook's baking pantry.But with everyone baking more than ever, flour has become a hot commodity. .So when you get your hands on some, you want to be sure you know how to store flour properly.All you need to remember are three commandments of storing flour:.Preventing flour from going bad means keeping the oils in the product as cool as possible, so storage has to be cold.The second enemy of flour freshness is light because it generates heat, and because it can cause oxidation.Lastly, flour storage shall be airtight. Use a vacuum sealer if you have access to one