Nebojsa Kutlesic, head mixologist at Adam Gray's Skylon, offers his take on a whisky sour with this peated egg cocktail recipe. He recommends using Bruichladdich Port Charlotte whisky to achieve the desired peaty flavour.
Fill a shaker up to halfway with ice cubes. Add the whisky, cordial, lemon juice and egg white. Seal with a lid or Boston Glass and shake hard for 30 seconds