How long will whole and crushed grains last?
William’s malted grain, in either whole or crushed form, will keep for up to 2 years if stored in the original 1 lb. oxygen barrier package. This is because, unlike coffee, grain has no oils to evaporate when crushed, so the crushed form keeps just about as well as the whole form. The whole form has a slight edge when bought by the sack, however, as our sacks do not have oxygen barrier liners, and the grain has more of a chance of moisture getting in and degrading the flavor. Figure that whole grain in sacks will last at least a year, and crushed grain in sacks will last at least 7 months. Storage in a cool dry area is best.