Preparation

• Crush the digestive biscuits into fine crumbs. Mix with melted butter and press into the bottom of a 9-inch springform pan. Chill in the refrigerator.
• Soak gelatin leaves in cold water until softened. If using gelatin powder, sprinkle over cold water and let it bloom.
• Heat the bloomed gelatin until dissolved. Set aside to cool slightly.
• Whip heavy cream until stiff peaks form. In a separate bowl, combine quark cheese, sugar, and vanilla extract. Mix until smooth.
• Gently fold whipped cream into the quark mixture. Gradually pour the cooled gelatin into the quark mixture while mixing. Fold in half of the sliced strawberries.
• Pour the filling over the chilled crust. Arrange the remaining strawberries on top. Heat strawberry jam until melted and brush over the strawberries as a glaze.
• Cover and refrigerate for at least 4 hours or overnight to set.
• Remove from the springform pan, slice, and serve chilled.