So I ended up with a spare refrigerator at my office and figured I would put it to good use, primarily as a lagering fridge and for storing hops in the freezer. I have had a corny of “Fest” lager in there for several months and sometime early last week I randomly decided to turn the temp on the fridge colder. It was on a low to mid setting and I turned it up to medium high (which is colder).
Purely for research, I went to take a sample a few days ago before heading home and nothing came out of the picnic tap. Strange, so I checked the co2 guage. Empty (it was only a paintball tank). I had a just filled 5 lb tank and hooked that up. Nothing came out. Felt the side of the key and it was ICE cold. Sloshed it and nothing. It was solid ice.
I have since thawed it and made sure the lid was sealed and am now re-chilling it.
What effect will freezing solid a keg of beer have once it thaws?