For the lemon soup, boil water, lemon zest and sugar (1). Remove the lemon peel. Add raisins and stir in semolina. Let swell for about 5 minutes, then add juice of one lemon.
Separate the eggs. Mix egg yolks with some hot soup in a cup and add to soup.
Beat the egg whites with the whisk of an electric hand mixer until stiff, add the rest of the sugar and make small dumplings with a teaspoon and put them on the soup. Cover and let stand for 5 to 10 minutes. Serve the lemon soup with the snow dumplings.