Five casks of single malt, double-distilled in 1988 have been set aside in the Teeling Whiskey Company's warehouse. They were selected for their balance of spice, fruit and wood, according to Alex Chasko, TWC's whiskey wizard, who rates them as "some of the best casks we have in the warehouse".

Each year one of these ex-bourbon casks will be bottled at 46% for sale at The Loop in Irish airports. There will be 250 bottles of each. Collecting all five is an opportunity to track the maturation of some very old Irish malt from 25 to 29 years old.