I clean my own squids and I want to preserve the ink for later use. I was wondering what to do with the ink sac. Should I collect the ink in a little jar and freeze it?
Or how long will it last in the refrigerator?
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I save my ink from freshly cleaned squid and just freeze it
So it looks like your best bet would be to extract the ink from the sacs into a suitable freezer container and freeze it.
Freezing will definitely help it to last longer as the shelf life of squid in the refrigerator is 1-2 days. You can extend this to 3-5 months in the freezer. I'd imagine the squid ink would have a similar shelf life.