Last Thursday was my birthday and my wife and I went to overnight in Dublin to have a night out there. As we were staying in an hotel I packed a bottle for each of us for the hotel room. Having just finished making a batch of nuked sour mash type whisky I decided to take a bottle of that and so I filled a 70cl bottle and off we went.
On the drive to Dublin it suddenly occurred to me that the Whisky had not been diluted and was still 62.5% ABV. Nice but not what I wanted so, I decided to dilute it when we got to the hotel and, without thinking, bought a bottle of Ballygowan mineral water for the purpose!
I did the deed and had a few drinks before we went out and a nightcap when returned - it was a delightful tipple
However, when we returned home I was unpacking the few things we had brought home, one being the bottle of my Whisky, and to my surprise the remaining Whisky had become a green cloudy liquid
It appears the minerals in the mineral water had been affected by the alcohol, solidified and flocculated

OMG as they say!
A couple of coffee filters later and the spirit was back to its crystal ruby clarity and seem none the worse for the experience but I have put it in a prominent position in my kitchen and will keep it under observation for the next while to see if anything else develops.
Anyone else come across this or have a qualified explanation?
AM
