Add <quantity>60<unit>ml</unit></quantity> of bourbon and <quantity>15<unit>ml</unit></quantity> of simple syrup to a cocktail shaker

Add <quantity>30<unit>ml</unit></quantity> of lemon juice

Add <quantity>1</quantity> egg white

Add <quantity>1<unit>cup</unit></quantity> of ice cubes and shake the cocktail shaker

Drain, moving the liquid continuously to form a foam

Transfer to a chilled coupe glass

Squeeze and rub a lemon peel over the rim of the glass. Flame the oils. The whiskey sour is ready

Enjoy your delicious whiskey sour!