I purchased a hermetically sealed package of smoked salmon right before Christmas for a brunch I was going to have. I ended up having to postpone it due to the Christmas snowstorm, and it's rescheduled for this weekend. Do you think the salmon is still good? I know smoking acts as a preservative, but I don't know how long it might keep. As you know, smoked salmon is a little pricey, so I don't want to throw it out needlessly. TIA!