Good to know.

General Shelf Lives For Common Items:
Flour unopened: up to 12 months. Opened: 6-8 months.
Sugar unopened: 2 years. Sugars do not spoil but eventually
may change flavor.
Brown sugar unopened: 4 months.
Confectioners sugar unopened: 18 months.
Solid shortening unopened: 8 months. Opened: 3 months.
Cocoa unopened: indefinitely. opened: 1 year.
Whole spices: 2-4 years. Whether or not opened.
Ground spices: 2-3 years. Whether or not opened.
Paprika, red pepper and chili powder: 2 years
Baking soda unopened: 18 months. Opened: 6 months.
Baking powder unopened: 6 months. Opened: 3 months.
Cornstarch: 18 months. Whether or not opened.
Dry pasta made without eggs unopened: 2 years.
Opened: 1 year.
Dry egg noodles unopened: 2 years.
Opened: 1-2 months.
Salad dressing unopened: 10-12 months.
Opened: 3 months if refrigerated.
Honey: 1 year. Whether or not opened.
Ground, canned coffee unopened: 2 years.
Opened: 2 weeks, if refrigerated.
Jams, jellies and preserves unopened: 1 year.
Opened: 6 months if refrigerated.
Peanut butter unopened: 6-9 months