Wemyss Malts is a family-owned business and respected independent bottler of whisky. The Wemyss family also owns Kingsbarns distillery in Scotland. Vanilla Burst by Wemyss Malts is a blended malt, in this case meaning it is made by blending 2 Speyside single malt whiskies together. These whiskies matured in 15 first-fill ex-bourbon barrels and only 4800 bottles have been made available worldwide. The name of the whisky should give you an insight as what to expect.
