Whisk the egg whites with the granulated sugar to get a firm mixture. Line a baking sheet with baking paper, then use a dressing bag to make three strips of meringue twice, leaving space between the strips for the biscuit mixture.
Preheat oven to 160 ° C / 325 ° F.
Whisk the egg yolks, eggs, granulated sugar, vanilla extract and grated lemon zest until frothy. Then pour the cream into the dressing bag and fill the space between the meringue strips. Sprinkle everything with powdered sugar and bake in a preheated oven for approximately 25 minutes.
To make the cream, whisk in the double cream with the vanilla extract and add the powdered sugar.
Spread one strip of biscuit with red fruit jam, then coat with cream. Put another strip on top, sprinkle with powdered sugar and decorate with jam and strawberries.
