Wash, clean and possibly chop the berries (defrost frozen berries). Sweeten berries with 1-2 tbsp. sugar and sprinkle with liqueur. Leave to infuse for approx. 15 minutes.
Separate the egg. Mix quark, egg yolk, vanillin sugar and icing sugar until smooth. Beat the egg white until stiff and fold into the quark mixture
Pour the berries into ovenproof cups or tins. Spread the curd mixture over them. Gratinate under the preheated oven grill or at the highest setting in the preheated oven for 3-5 minutes. Make sure that the quark cover does not get too dark
Wash the currant panicles and shake them slightly dry. Turn the panicles in the rest of the sugar. Decorate berries au gratin with redcurrant panicles and lemon balm