It was 5*F at the Barn this morning. However by the time I was done with chores, breakfast, etc. and ready to brew it was a tropical feeling 15*F. I brewed a TrueBrew Nut Brown Ale inside and was going to use my "new to me" homemade wort chiller outside but the outside faucet was frozen. However, since I normally chilled in an ice bath, I went back down to the barn, set the brewpot on the ice in the bathtub we use to water the animals with. It actually worked fine, cooled quickly, and melted a hole in the ice, not all the way through of course as the ice is pretty thick.