Wash strawberries and take 2-3 apart for the garnish. Remove the stem and leaves from the rest of the strawberries and cut them into small pieces.
Pour the strawberries into the glass of a blender with 50 ml of lemon juice and 50 g of icing sugar. Blend for a few seconds. You will have to obtain a liquid purée that you will use to dip the ladyfingers.
Dip the ladyfingers in the strawberry purée for 2 seconds on each side and set aside while preparing the mascarpone cream.
Whip the whipping cream and, as soon as it begins to whip, add 80 g of icing sugar. Continue whipping to stiff peaks.
Add the mascarpone to the cream, and whip until smooth and fluffy.
Add the grated lemon zest and mix gently, then transfer the cream into a sac à poche with a star nozzle.
Arrange the ladyfingers in a small springform pan (I used a cm 15 pan) or in single-portions glasses or cups. Top with a layer of mascarpone cream and continue with the layers until all the ingredients are used up. Complete the last layer with tufts of mascarpone cream.
Garnish with the strawberries you left aside.
Refrigerate for at least 2 hours before serving.