My MIL is coming from Iowa and said "I can grab the sweet potatoes on the way down" She is coming on the 12th Nov. and I said "wont they go bad?" and she goes "why would they? canned yams dont go bad for a long time.." LOL i couldnt help but laugh I hope I didnt hurt her feelings, but I do fresh ingredients---no offense to anyone who does canned goods, just not my gig.