Sugar, Flour, Powdered Milk?!
Answers: If kept in airtight containers, what is the shelf life of each of these items? Thank you!
White sugar i assume? I don't believe white sugar ever real spoils, i don't believe it gets bacteria growth so it should be fine. I would say do not worry about the sugar.
Edit on sugar: Here is proof
What is the shelf life of sugar?
Sugar, properly stored, has an indefinite shelf life because it does not support microbial growth. Because C&H harvests its sugar cane year-round, you can expect optimum freshness and flavor at the time of your purchase.
http://www.chsugar.com/Consumer/faqs.htm...
Edit for flour:
Shelf-Life: for cabinet storage, up to 8 months if properly stored in a sealed container or if tightly wrapped, and for refrigerator storage, up to one year.
http://whatscookingamerica.net/Bread/Flo...
Edit on powdered milk:
Shelf-stable milk
Several types of milk products have been developed over the years that have a long shelf life, such as canned milk, powdered milk, and ultrapasteurized milk. All these products can be stored without refrigeration in unopened packages or tightly sealed containers for up to six months.
http://www.vitamins.com/vf/healthnotes/H...
Hope this helps!