2oz Whiskey of choice
0.5oz AVW IPA or Porter Beer Malt Vinegar
0.75oz simple syrup*
1 dash Angostura bitters
1 egg white
Add all ingredients to mixing tin (or two interlocking glasses) with ONLY two ice cubes. Whip shake vigorously until ice sounds broken.
Double strain through a cocktail strainer and then a kitchen strainer into a lowball glass with two ice cubes and one skewered cherry.
You can add a second cherry, we won't tell.
*Simple syrup really is simple! Combine one portion of water to one portion sugar in a small saucepan over medium heat.