How old can sour milk and buttermilk be before it's not good to ingest? I am now an old man, alone and don't know much about cooking.
By JG from Holt, MI
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unless you bake you probably don't want to eat it
i sincerely don't think there's anything you can do with it if you are not going to be baking with it
you could swap it with a neighbor who DOES bake
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