Love me flip
Grate tonka bean over drink.
BEAT egg yolk with sugar in base of shaker. Add other ingredients, SHAKE with ice and fine strain into chilled glass.
[['1 fresh', 'Egg yolk'], ['6 cl', 'Havana Club 7yo rum'], ['3 cl', 'Yoghurt liqueur'], ['1.5 cl', 'Pedro Ximénez sherry'], ['3 drop', 'Angostura Aromatic Bitters'], ['0.75 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)']]
[['1 fresh', 'egg white'], ['6 cl', 'amber rum'], ['3 cl', 'yoghurt liqueur'], ['1.5 cl', 'pedro ximénez sherry'], ['3 drop', 'angostura'], ['0.75 cl', 'sugar syrup']]