Grease a springform pan (26 cm Ø) and dust with flour. Preheat the oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2). Wash the lime hot, dry, finely grate the peel. Squeeze lime.
For the dough, mix 125 g fat, 100 g sugar, 1 packet of vanilla sugar and 1 pinch of salt with the whisks of the hand mixer until creamy. Stir in the eggs one by one. Sift 175 g flour and baking powder over them and stir in.
Stir in lime zest and juice.
Spread the dough into the mould. Bake in a hot oven for 18-20 minutes. Let the cake cool down for about 10 minutes, then remove from the tin. Let them cool down.
For the cherry cream, soak the gelatine in cold water for at least 5 minutes. Stir the quark, mascarpone, 75 g sugar, pineapple juice, liqueur and syrup until smooth. Squeeze the gelatine and dissolve over a very low heat. First mix with 2-3 tbsp. cream, then stir into the rest of the cream.
Chill for 5-10 minutes until the cream begins to gel.
In the meantime, whip the cream until stiff, while pouring in 1 sachet of vanilla sugar. Fold into the cream and spread loosely on the base. Chill for at least 4 hours.
Shortly before serving, wash and dry the carambolas and cut them into thin slices. Decorate the cake with carambola and cocktail cherries.