Wash the plums, remove stalks, halve, stone and cut into slices. Sprinkle the plums with 3 tablespoons of sugar, sprinkle with grappa and marinate for about 30 minutes
Caramelise 50 g sugar and 2 tablespoons of water in a saucepan until brown. Spread the muesli on a piece of baking paper, sprinkle with caramelized sugar, spread flat and allow to set
Place the plums in a sieve, drain, collect the juice and measure. Fill up to 200 ml with apple juice and bring to the boil. Mix the starch with a little water until smooth, bind the simmering stock with it until slightly creamy, bring to the boil again. Pour the stock into a bowl, let it cool down, stir in the plums and let it cool down
Mix quark, 3 tablespoons sugar, vanillin sugar, lemon juice and zest. Whip cream until stiff, fold in. Arrange quark and plum compote in bowls. Break or chop the brittle into pieces, sprinkle on the compote. Use the rest of the brittle for other purposes
Waiting time approx. 45 minutes