Boil down espresso, coffee liqueur and 4-5 tablespoons of brown sugar in a small pot at medium heat for about 6 minutes. Pour the mixture into a small bowl and let it cool down. Mix mascarpone, quark, mineral water, vanilla sugar and 4 tbsp. brown sugar well. Put 4 x 2 lady fingers each on a plate, sprinkle with some coffee liqueur syrup and add 1/8 of the mascarpone cream each. Place 2 more ladyfingers on the cream, spread the rest of the cream on top. Drizzle with the remaining coffee liqueur syrup
Waiting time 1 hour