Expiration date on spices?
When you buy a jar of spice, for instance I just purchased a jar of "Spice Islands" Chile powder and one of ground cumin seed, they don't have expiration dates on them, just numbers on the bottom such as "SL12C" which is on the ground cumin seed.
Is there some way to tell when this was bottled from that number?
Reason: I can write down the date I purchased the bottle but what if it was packaged by Columbus 2 weeks after he landed!! How do I know? There must be some way to decipher those numbers, anyone know?