A tip from Sue!
Mark perishable ingredients
When ever you bring home a brand new spice, oil, vinegar, flour, sugar or other perishable ingredient, mark the bottle/container with the day’s date with a felt tip pen. Most "permanent markers" will write on just about any container.
That way if you don’t use it very much, but it’s been opened, you know how fresh it is. For an important meal don’t “submarine yourself” by using past expiration ingredients that have long lost their fresh taste and flavor.