Rice

[jansman]

However, Mylar and all that aside keep the original package in the cool and dark it will last as marked. Keep storing , keep eating it and it is all in order.

[Vespa]

Oxygen absorbers are highly advisable for white rice, but they are an absolute must for brown rice as the oils in the bran and germ coating become rancid fairly quickly in an Oxygen atmosphere.
You'd still be able to eat it but it'll taste foul.

[jansman]

Oxygen absorbers , mylar and vac packers are good. No problem at all with'em. I use vac packing and gas flushing all day every day at work. However, at domestic level it comes at a cost.
Now I store food. A lot of it. When you buy rice it generally has two years on it. I store mine in sealed buckets( 5 gallon homebrew buckets, and screw top barrels from the local Indian restaurant-that rice comesin!!!) these buckets go in a dark , cool outbuilding. Rice goes a long way- a big mugful does 4 people. I rotate mine, I do not try to store it forever. I have 2 yrs worth now. It is a lot of rice, and none has gone bad. Nor is it offdate.

Just my two pennyworth.