3: Put the melon balls into a bowl and pour 2 tablespoons Port and 2 tablespoons caster sugar over. Mix well and set aside in the fridge, covered with plastic film.
5: Churn in an ice-cream maker until of sorbet consistency.
6: Put a layer of sorbet into well-chilled sundae dishes.
7: Cover with melon balls. Serve immediately.
Remarks
For more about sorbets, see the Ice-cream and Sorbets page. You can replace the port with any alcohol you like. For example, Macvin du Jura gives a very good result. For a more substantial ice, you can mix in the melon left-over from making the balls.