Tom & Jerry (serves 6)

Pre-heat the heat-resistant glass by filling it with hot water, then discard the water before use.

Prepare the garnish of freshly grated nutmeg and set aside.

In a mixing bowl, whisk the egg yolks until they reach a thin consistency. Incorporate the superfine sugar, overproof aged rum, cinnamon, clove, and nutmeg, stirring thoroughly.

In a separate bowl, whisk the egg whites until they form stiff peaks.

Gently fold the beaten egg whites into the spiced yolk mixture, creating the Tom & Jerry batter.

For each serving, pour the cognac and Havana Club Añejo 7 Años Cuban Rum into the warmed glass. Add a couple of tablespoons of the Tom & Jerry batter.

Stir thoroughly with a barspoon while topping up with boiling water.

Finish each drink with a frothy head and garnish with the freshly grated nutmeg.