Bring milk, 1/8 litre water, salt and butter to the boil in a saucepan. Add the flour at once and stir with a mixing spoon until the dough separates as a lump from the bottom of the pot. Put the dough into a mixing bowl and stir in the eggs one by one with the whisk of the hand mixer. Pour the choux pastry into a piping bag with a large star-shaped spout and squirt 12 (relatively flat) cream puffs closely together in a circle (20-22 cm Ø) onto a baking tray lined with baking paper. Fill an ovenproof dish with water and place it on the bottom of the oven.
Bake the choux pastry in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes, then remove from the oven and allow to cool. Coarsely chop the chocolate coating and melt in a bowl over a warm water bath. Let the chocolate coating cool down lukewarm. Wash the currants and, except for 3 panicles, pluck them from the stems. Whip the sour cream, cream, vanilla sugar, sugar and liqueur until stiff (approx. 5 minutes), allowing the liquid chocolate coating to shrink. Finally, pour in the cream firming agent. Fold in currants and fill the cream into a piping bag with a large perforated spout. Cut the wreath in half horizontally. Spray the cream into the lower halves and put the lids back on top.
Whip the sour cream, cream, vanilla sugar, sugar and liqueur until stiff (approx. 5 minutes), allowing the liquid chocolate coating to shrink. Finally, pour in the cream firming agent. Fold in currants and fill the cream into a piping bag with a large perforated spout. Cut the wreath in half horizontally. Spray the cream into the lower halves and put the lids back on top. Decorate with lemon balm and currants
1 hour waiting time