To make the berry cheesecake, start by preparing the base ofthe cake: melt the butter in a saucepan over very low heat, then turn off andlet it cool. Meanwhile, pour the biscuits into the mixer and operate it untilthey are completely crushed in order to reduce them to a powder; transfer the mixtureinto a bowl, add the melted and slightly warmed butter.
Mix the mixture by stirring with a spoon, then take a hinged mold with a diameter of 24 cm, grease and lined with baking paper, pour thebiscuits here and with the help of a spoon, press the mixture well into thebottom of the mold in order to obtain a compact and smooth base. Leave toharden in the refrigerator for at least half an hour so that the base becomessolid.
In the meantime, take care of the filling: then soak thegelatin in a large bowl with cold water, for about 10 minutes, until it becomessoft (it will be used to firm the cream). Squeeze the lemon juice and filterit. Wash and pat the berries, pour them into a large pan, then add the lemonjuice.
Then also pour in the icing sugar, stir and cook over lowheat for about 5 minutes, stirring occasionally. After the cooking time of thefruit, turn off and transfer the berries in a colander to cool them and collectthe juice with a small bowl placed under the colander. You will need theberries to fill, while the juice to keep aside will be used to make thecovering.
At this point, heat the liquid cream in a saucepan, thendrain and squeeze the gelatin well, which you will have to dissolve in the heatedcream. Stir with the whisk to dissolve it completely. Let it cool down.Meanwhile, sift the ricotta with a sieve and collect it in a bowl, if thericotta has a lot of serum, it is advisable to let it drain in a colander for1-2 hours.
Then, add the creamy cream cheese, the grated rind of thelemon and the icing sugar, mix with a spatula or a whisk to mix the cream andpour in the cream (in which you dissolved the gelatin), now lukewarm; mix tomix it evenly.
At this point, take the mold out of the fridge, the basewill have firmed up in the meantime. Pour half of the creamy mixture into thebiscuit base. Level the surface with a spatula then stuff with the berries thatyou have left to drain. Continue by covering the fruit layer with the remainingcream.
Level the surface with a trowel and place it in therefrigerator to harden for 2 hours. Once the cheesecake is very cold, preparethe coating: pour 280 g of the juice of the berries, which you have preserved,into a saucepan, add the sifted cornstarch stir with a whisk to avoid theformation of lumps, bring the saucepan over the heat and let it thicken slowlyover low heat for about 5 minutes.
Then let it cool, stirring often. At this point, take yourcheesecake from the refrigerator; pour over the berry sauce, with a spatulalevel to even out the surface. Place back in the refrigerator to harden thecoating for at least 1 hour. Once it is well firmed, your berry cheesecake isready to be enjoyed!