Bring sugar and 3-4 tablespoons of water to the boil. Beat the egg whites with the whisks of the hand mixer until stiff. Add salt and vinegar. Add sugar syrup in a thin stream. Sieve icing sugar and starch onto the beaten egg white and fold in.
Pour the beaten egg white into a piping bag with a medium-sized perforated spout and squirt circles (approx. 8 cm Ø) onto a baking tray lined with baking paper. Spray the outer edge twice. Dry in a preheated oven (electric cooker: 50-80 °C/ gas: level 1) for 3-4 hours.
Open the oven door from time to time. Then let it cool down for about 10 minutes on a cake rack. In the meantime, finely chop the chocolate and melt it on a hot water bath. Pour into a small freezer bag, cut off a tiny corner and cover the meringue rings with fine chocolate strips.
Cool for about 5 minutes. Drain gooseberries well. Whip the cream with the whisk of the hand mixer until stiff, allowing the vanillin sugar to trickle in. Fold the cream into the quark. Add approx. 1 tablespoon of the quark cream to each meringue bowl.
Spread the gooseberries over the meringue rings. Eat fresh.