Quote:
Originally Posted by
redvan 
I purchased three unpeeled beef tenderloins from Costco one Christmas appoximately two weeks before I needed them. I was always told that they could keep for several weeks in the cryo-packaging. about two days before I needed them, I took them out to peel and clean them up and there were dark greenish/grey spots all over them, not much smell to speak of, just discoloring. Needless to say, they went in the garbage and I had to go get three more and at about $70 each, I was quite annoyed.
I now never keep anything in it's cryo-pack longer than a day or two. I would much rather repack either whole or in portions in vacuum bags, then freeze.
I believe the blood the meat is sitting in had a lot to do with it going bad.
Red.
Sadly that meat you tossed was most likely not spoiled at all. If meat is rancid it will reek bad enough to make you yak when you open the cryo.
If you'll pardon the pun there's not a lot of gray area there. All meat coming out of cryo stinks and can have spots of discoloration from gray to green. That's perfectly normal especially on tenderloins. Next time trim those spots off.
Standard SOP for almost every steak house buying meat in cryo is to hold for a minimum of two weeks. You can hold cryo meat for four weeks at home as long as your fridge is operating at 37 or lower. After four weeks of wet aging beef will take on a very distinct flavor and yes it will stink when you open the cryo. Remember that meat has been deprived of oxygen.
The next time you run into an issue like this please come to CT and ask for help. We could have saved you a lot of $$ and frustration. ;)
I think Ed was spot on about fridge temps for meat in cryo and every one has to use their own best judgment. Cryo on beef is like a nice thick blanket. If you buy meat on a hot day and it gets warm before you get home and put it in the fridge remember that it can take a few days to bring the internal temperature of the meat back down because the cryo is insulating the product. Clearly this is far more of an issue for a sub-primal like a bone in rib-eye than a tenderloin.
Dave