I'm a member of an Ontario based group for sustainable living, and one of the topics discussed recently is canning. One of the members has been posting photos of foods that she has re-canned from commercially canned foods that have reached its expiry date. Being new at canning, I questioned this practice and no one has been able to answer on that group. Knowing there are some very avid canners here, I thought maybe you would be able to clear this up for me. If something is in a can, bought at the grocery store, and it reaches it's expiry date, would it not be better used as soon as possible? As far as I understand, if a can is not bulging or seeping, and the food does not have a foul smell or bubbles it is safe to eat. Once a food reaches it's expiry date and not eaten, is it wise to open the can, risking contamination, to re-can at home? It is still the same food after all, and so the expiry date wouldn't change? And what about dehydrating these expired goods and vaccuum packing them? The items in question are chick peas, peas, tomatoes and tomato sauces. Is this safe?