I have found a frozen batch of turkey stock from last October (Canadian Thanksgiving) is is safe to consume a year later?
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If it has been completley frozen the entire time, I believe it is still safe to use. Typically, the only thing that long term freezing will do to food is alter the quality, but with a stock, you don't have much to worry about there.
however, I'm not an expert, so if I'm wrong, someone else will chime in.