1 oz ruby port 12 oz stout 2 tsp superfine sugar 2 tsp water 1 pinch grated nutmeg 1 pinch ground cinnamon
Method
Dissolve the sugar in the water in the bottom of a beer mug. Carefully pour the stout to give a half-inch head. Float the port on top. Garnish with a dusting of nutmeg and cinnamon, and serve.