For the damson roast, halve the washed, well drained damsons, remove the seeds and mix with the sugar , jelling sugar and spices in a large pot (scrape out the vanilla pod and add both the pulp and the pod).
Cover and let stand overnight in a cool place. The next day, add water and bring to a boil. Let the roaster boil until the skin of the plums wrinkles.
Now season with plum brandy and pour into prepared glasses while still hot. Sprinkle with a few drops of plum brandy, light and close immediately.