Fourth and Rusk
Garnish with another glass of this because it's delicious.
Pour all ingredients into a shaker with ice, shake, pour into glass.

This was served in a coupe glass, but also works well in a martini glass or yatzee shaker.

You could hold off on the cinnamon and use as garnish. I actually like more bitters, but given 'dash' isn't all that scientific, start small and add more to your liking. I happen to like more bitters.
[['4.5 cl', 'Bacardi Spiced'], ['3 cl', 'Bacardi Carta Blanca light rum'], ['2.25 cl', 'Giffard Banane du Brésil liqueur'], ['6 dash', 'Black walnut bitters'], ['1 dried', 'Cinnamon powder'], ['6 cl', 'Almond milk']]
[['4.5 cl', 'bacardi spiced'], ['3 cl', 'white rum'], ['2.25 cl', 'giffard banane du brésil liqueur'], ['6 dash', 'black walnut bitters'], ['1 dried', 'cinnamon powder'], ['6 cl', 'almond milk']]