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frozen shrimp shells

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Hi,

I've been saving some shrimp shells in my freezer with the intention to use them to make a sauce or bisque or something along those lines. Now I've realized they've been in there a really long time-- not exactly sure how long at this point, but close to 9 months is a safe bet.

How long do you think they'll keep for? Any danger in using them or will they simply lack flavor?

Thanks!

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  1. They will be OK in terms of not dangerous but they may have that "freezer" taste to them.

    1. I used some really old ones. Np one got sick, but the house stunk, and the flavor of the stock was fishy...

      1. Thanks for the info.

        I finally got around to using them, adding them to a crab stock I made after a home crab boil. Not sure they added much flavor to the stock given the small amount of shrimp shells relative to crab shells-- but they certainly didn't hurt it.