Chris Black has written an article about salt and sugar food storage over on Survivopedia – Why Salt And Sugar Are Your Best Survival Allies. 
Sugar and salt are among the most common and widely used household substances in North America.
Both sugar and salt are with us since at least 8,000 BC, as according to researchers, the sugarcane plant was first domesticated by the good people in Southeast Asia 10,000 years ago.
People can live without sugar all their lives, except from Americans of course, but salt is another story altogether. While our bodies can manufacture their own sugar from various foods rich in carbohydrates, like fruits and cereal (fruits also contain sugars by the way), salt, formerly known as sodium chloride, is an essential mineral, which is readily available in nature in its natural crystalline form, also known as rock salt.
Unlike sugar, which is a highly refined/processed food, making for the ultimate soluble carbohydrate, and not very good for one’s health, salt is an essential mineral for both humans and animal life in general. While plant life and animal meat (including milk) contain sodium in various quantities (not so much for plant life), if you’re a vegetarian, you may require extra salt added to your diet, because the human body cannot produce sodium chloride on its own, and the plant-based sodium intake may not be enough for your body to function properly.
The Good News about Sugar and Salt
They’re both non perishable substances, provided they’re stored properly…
Lower Valley Assembly 