In the first step, quark with lemon juice and lemon zest and sugar are mixed until creamy. Now if you use gelatine sheets, soak them in cold water, dissolve them over a mild heat and stir into the quark. If you are working with Gelatine Fix, then stir in the powder quickly according to the instructions on the package.
Now whip the cream until stiff and fold into the quark mixture. If you have seasonal jam at hand, then coat the floor with it generously. Then the quark mass is either placed on top of the biscuit in the springform pan, or the biscuit is placed in a cake ring to fill the mixture here. If you still want to use something for the decoration, hold back from the mass and then fill it into a piping bag.
Very important - if you use Gelatine Fix, you have to work very quickly. then the smoothing of the mass in the mold to get a flat surface as usual with cheesecake is perfect. Here you can decorate it as you like or you can leave it PURE. Put the finished cake / tart in the cold for at least 2 hours. It goes faster, of course, in the freezer. Here you put the cake in for 45 minutes .....