I left my kegs outside to remain cool (the keg fridge isn't installed yet). Unfortunately the balmy 6 C day dropped to -16 C by the time I got home, and the kegs are slushy... not frozen solid, but verrrry slushy.
I've heard rumours about why to not drink once-frozen beer.... but I'm not sure I can think of a logical reason why it would do anything too bad?
Any thoughts? Experience? It would be way too bad to throw out 2 kegs full of beer, when my draft system is just about complete!