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hardlikearmour is a trusted home cook.
added about 2 years agoI would expect it to last months in an airtight container in the freezer.
If you seal it well (in a Tupperware or as cubes in baggies, this will last you at least for two months.
I freeze my stock in a loaf pan and then use a foodsaver. It lasts months that way. Air is what you don't want.
I recently started using ziplock bags after I found this technique. You fill with stock until almost to the top. Then lower the bag into a pot of water. The water pressure squeezes the bag..so there's no air pocket. You almost have to completely submerge the bag...right up to the 'ziplock' part...then ziplock and freeze.
@sam1148 - you are so sous vide reversed! Love this.
in a good cold freezer with no or minimal air contact, stock will keep for ages. I've held it for as long a a year. I also use a loaf pan, or, sometimes, muffin tins (if I think I might want just a bit of the stock or if I've really concentrated it). I use the ziplock sous vide bags. You buy the starter kit that comes with a pump and it works really well. Getting all the air out of the bag is the key to making it last a long time without freezer burn.