I've recently benefited from a mistake...
Long story short, I made an IPA over a year ago that was WAY too bitter (I'm a hop-head and even I thought it was undrinkable).
I let it sit in my kegerator for the last year before trying it 2 weeks ago, still too bitter, and now the malt flavor was all but gone, I was ready to dump the batch to make room for new production until...
I was testing my kegerator temperatures and I accidentally froze the keg, I let it sit outside the last 2 days figuring I'd dump it soon anyway when I pulled a pint while brewing today for the hell of it.
I have accidentally merged IPA with Eisbock to create 'Double Eis-PA', it's easily the best homebrew I've ever had, very sweet with plenty of alcohol warmth to finally balance the bitterness.
Here is the 'beer slushy' I was left with in the keg
So rather than dumping the batch I ended up gettin just under 24 bottles