Wash the rosemary, dab dry, remove the needles and chop very finely. Wash and clean the gooseberries.
Bring the berries, rosemary, 175 g sugar and 100 ml water to the boil and simmer for about 5 minutes, stirring continuously. 2⁄3 Remove gooseberries from the pot.
Lightly puree the remaining gooseberries. Stir starch and 2 tablespoons of water until smooth. Stir into the boiling puree and simmer for about 1 minute. Fold in gooseberries. Let the compote cool down, stirring from time to time.
Whip the crème fraîche, 2 tablespoons of sugar and lemon juice with the whisks of the mixer and fold into the quark. Lay the compote and quark cream alternately in six glasses and serve.