Chop the nuts and roast without fat until golden brown. Bring milk, 2 tablespoons sugar, vanillin sugar and salt to the boil. Remove from heat. Stir in semolina. Add the nuts, except for a few. Soak semolina for about 5 minutes
Separate the egg. Stir the egg yolk into the slightly cooled semolina. Beat egg white until stiff and fold in
Rinse 4 small moulds (each with a capacity of approx. 1/8 l) or 1 large bowl with cold water. Fill in semolina and let it cool down
Stir the starch and 2 tablespoons of apple juice until smooth. Melt 1 tablespoon of sugar until golden yellow. Stir in the rest of the apple juice. Bring to the boil and thicken with the mixed starch
Wash the apple, quarter it, core it. Cut half into columns, rest into cubes. Sprinkle with lemon juice. Steam in the sauce for about 2 minutes. Flavour with cinnamon. Turn over flummery. Serve with apple sauce. Decorate with mint if desired.