Rim a sour glass with vanilla granulated sugar
Pour 0.75 oz of quail egg white, 0.35 oz of lime juice, 0.35 oz of sugar syrup, 0.75 oz of coffee liqueur, 0.75 oz of blackcurrant vodka and 0.75 oz of vanilla vodka into a shaker
Fill the shaker with ice cubes and shake thoroughly
Strain into a chilled sour glass