Sugar is a fantastic addition to longer-term storage. In tough circumstances, it would be great to make a batch of cookies and put smiles on your family's faces. Sugar makes everything a little more palatable and versatile.
Sugar stores well unless it gets wet. If you live in a humid climate, it's a good idea to store your sugar in a PETE container or #10 can so that the moisture in the air doesn't turn your sugar into a brick. But even if that does happen, your sugar is still usable. Sugar, stored in a #10 can in ideal conditions can last up to 30 years.
Storing sugar does not just mean white sugar. You can store honey, brown sugar, powdered sugar, molasses, maple syrup, corn syrup, jam, jello, and powdered fruit drink (with sugar already added). Most of these items, however, are more suitable for a three-month supply because of the short shelf lives. Brown sugar is also not recommended for longer-term storage because of potential microbial growth as a result of the moisture content.1 Honey will crystallize over time, but can be warmed and returned to a liquid state. Do not use honey that has developed mold in storage.
1 - Provident Living