Glen Moray 21 Year Old Portwood Finish is a 46.3%-ABV non-chill-filtered single malt Scotch whisky aged 19 years in American oak casks, then finished for two years in Portuguese port wine casks.
There's some thought that this may be due to barrel choices, though it's hard to say. While I had higher hopes for this "accessible slice of luxury," this is an enjoyable dram.