The Ultra bottle is the results of a five-yr quest by Johnnie Walker’s owner, Diageo, to discover the most sustainable and lightest packaging achievable though retaining the luxury aura in the franchise and its Unique combination of whiskies, which include ultra-unusual Oban, Brora, Royal Lochnagar, and several ghost distilleries. https://whiskeylandllc.com/product/johnnie-walker-blue-label-ultra/