When you think of a long-term, low-maintenance pantry staple, a two-pound sack of all-purpose flour probably comes to mind. But keeping flour in the paper bag isn’t actually a good idea for storage.

For baking alone, there's all-purpose, whole wheat, cake, and pastry flours to choose from, too. Though none of them will do if it's bread that you're baking, as there's a bag of flour meant ...