Wash the plums, cut them in half and remove the seeds. Cut plums into slices. Caramelize 3 tablespoons of sugar and 1 tablespoon of water in a pot. Meanwhile cut open the vanilla pod and scrape out the pulp. Add the star anise, vanilla pod and pulp to the caramelising sugar.
When the caramel is golden brown, deglaze with plum juice and simmer until the sugar is dissolved. Add the plum wedges and bring to the boil and simmer for about 3 minutes. In the meantime stir starch with a little water until smooth. Boiling soup with it, thicken slightly creamy, bring to the boil again. Pour soup into a large bowl and let it cool down for about 30 minutes. Afterwards put it in a cool place for at least 30 minutes. When the soup is cold, beat the egg whites until stiff, add 1 tablespoon of sugar and a few drops of lemon juice. Bring a pot of water to the boil, turn off the stove. Cut off small dumplings with 2 teaspoons, put them into the water and cook in the closed pot for 4-5 minutes in the after-heat.
Afterwards put it in a cool place for at least 30 minutes. When the soup is cold, beat the egg whites until stiff, add 1 tablespoon of sugar and a few drops of lemon juice. Bring a pot of water to the boil, turn off the stove. Cut off small dumplings with 2 teaspoons, put them into the water and cook in the closed pot for 4-5 minutes in the after-heat. Remove the dumplings with a skimmer, drain and let them cool down. Arrange soup and snow dumplings in cooled bowls
1 3/4 hours waiting time