The latest addition to the Travel Retail exclusive range is a 21 year old single malt matured solely in 1st fill ex-Bourbon casks. Time in ex Bourbon Barrles has brought warm flavours of fresh croissant, apple crumble and manuka honey rounded off with a fruity, buttery finish.The latest addition to the Travel Retail exclusive range is a 21 year old single malt matured solely in 1st fill ex-Bourbon casks. Time in ex Bourbon Barrles has brought warm flavours of fresh croissant, apple crumble and manuka honey rounded off with a fruity, buttery finish.