Here's the 2017 edition from the John Walker & Sons Private Collection, titled Mastery of Oak. For this release, the team at Johnnie Walker have using a combination of three vattings - the first is a blend of malt and grain whiskies aged mostly in first-fill American oak, the second is a blend of Highland and Speyside single malts from refill casks, and the third is a blend of whiskies from a range of experimental casks (which features different char profiles, housed different drinks beforehand and some had even been "salt cured"!).

Johnnie Walker Blenders' Batch Espresso Roast Introducing Johnnie Walker Blenders’ Batch Espresso Roast; the result of an experiment led by blender Aimée Gibson, which involved distilling whiskies with barley roasted more heavily than ever before. This experiment created a malt with incredibly rich, dark chocolate notes. This unusually intense flavour was then balanced with other whiskies matured in rejuvenated casks to add a light spiciness and first fill Bourbon casks ensured a subtle vanilla sweetness. The end result is Johnnie Walker Blenders' Batch Espresso Roast, a rich Scotch blend, with a deep warmth and confidently punchy notes of rich coffee and dark chocolate that works brilliantly served neat in an espresso cup.