Apple Grog

Peel the apple, quarter it, remove the core and cut into small dice.

Drizzle the apple dice with lemon juice.

Put the apple dice with brown sugar, the cinnamon stick and apple juice into a pot and bring to a simmer covered.

Let everything simmer gently, covered, for about 15 minutes.

Divide the rum between heatproof glasses.

Pour the hot apple juice through a sieve into the glasses and stir.

Garnish with a few apple pieces if desired and serve hot immediately.