Dark 'n' Stormy Highball
Squeeze a wedge of lime into drink and drop in as a garnish
Integrated version: POUR ingredients into ice-filled glass and briefly stir.

Layered version: POUR ginger beer into ice-filled glass first, then FLOAT rum.
[['4.5 cl', 'Dark/black/blackstrap rum'], ['7.5 cl', 'Thomas Henry Ginger Beer']]
[['4.5 cl', 'dark rum'], ['7.5 cl', 'gin']]