For the dough, boil milk, 150 ml water, butter and 1 pinch of salt in a pot. Add flour at once and stir with a wooden spoon (with hole) until a white layer forms on the bottom of the pot and the dough separates from the bottom of the pot as a lump. Pour the dough into a bowl, immediately add 1 egg. Leave to cool for about 10 minutes. Then stir in 4 eggs individually.
Draw 4 rectangles (each approx. 10 x 18 cm) on two sheets of baking paper with enough space between each, so that they fit on a baking tray (approx. 35 x 40 cm). Pour the dough into a piping bag with a large perforated spout, spray in loose serpentines into the marking and spread. Bake one after the other in a preheated oven (electric oven: 200 °C/circulating air: 180 °C/gas: see manufacturer) for approx. 20 minutes. Let them cool down.
For the lemon cream, soak the gelatine in cold water. Whip the cream in portions until stiff. Heat the lemon zest, lemon juice, sugar and vanilla sugar in a saucepan until the sugar has dissolved. Squeeze the gelatine and dissolve in the syrup. Leave to cool. First stir 6 tablespoons of cream into the gelatine, then stir everything into the remaining cream. Chill until it begins to gel.
Spread 2 cake bases with jam first, then with cream to a height of about 1 cm. Carefully layer 3 more cakes and the remaining cream on each cake layer, finishing with one cake base. Chill for about 1 hour. Decorate with icing sugar and 1 cherry each. Cut the cake with an electric knife.