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This is why I don't store anything that can freeze in my shop. It is not heated and only lightly insulated. It sometimes gets below freezing here in the winter, and while I have not had anything freeze there yet, it could if we had a real cold snap (it was once below freezing, down in the 20s, for about a week once).Happens. We try to donate foods reaching BB dating which we more than likely won't use. Helps us avoid having to throw out food, something we absolutely abhor, but do on occasion.
As towards food storage, it is generally better to store foods in a controlled environment. As in an insulated house/shop, where there are less likely to be wide temperature swings at either extreme (not too hot, not too cold).
An over simplified example being swings of say 50-90 are far better for foods storage than swings of say mid thirties to over 100. A constant 70-80 even better.
My next shop will be heated and well insulated, preferably earth bermed with a hydronic geothermal floor, so I can work in the shop and store things there in the winter and be comfortable. Also the shop will serve as a backup shelter for family/etc. who are refugees/etc., that I decide to allow to live there until they can get better shelter. Also, as backup shelter for me if my house/primary shelter is compromised due to fire, wind/ice or earthquake.