For me, that bottle is the Thompson Brothers 22-year-old Highland Park, matured in a refill sherry butt, bottled at a hearty 55.9% ABV and limited to just 336 bottles. I originally bought it for the tasting club I run in Manchester, thinking that an aged Highland Park under the Thompson Brothers label was always going to be interesting. Highland Park is a distillery most of us know well. It is an expensive bottle at £150, but the Thompson Brothers have always delivered value, and I refuse to beat them up on pricing. It is Highland Park with absolutely no reins put on it, and one of the most genuinely fascinating whiskies I have tried in a long time.