My staple is rice so it is natural (and cheap) to store large quantities. It stores well. We go through a 25 lb bag every month as part of normal useage so rotation is not a problem. The problem is that CULTURALLY, my wife prefers "fresh" rice which is slightly stickier than "aged" rice. We are constantly in "discussions" about this but I have managed to keep 3-6 months of rice on hand at all times.

Conway Yee