We bought 200 pounds in...I'm pretty sure September/Octoberish. We bought that much because we thought that the price of grain would go up since we all suffered from the drought in 2012. It will more than likely be used by the end, if not, the middle of the summer. It is stored high and dry. It is not vacuum sealed or anything but just in the original package. I usually do 5 gallon brews, but have the capability of doing 10 gallons. I would do more 10 gallons if the grain would go bad in this time period.