For the cake
1 cup all-purpose flour
1/3 cup unsalted butter, softened
2-3 tablespoons cold water
For the filling
1/4 cup cornstarch
3 tablespoons all-purpose flour
1 3/4 cups granulated sugar
1/4 teaspoon salt
4 large egg yolks, slightly beaten
1/2 cup freshly squeezed lemon juice
1 tablespoon grated lemon zest
1 tablespoon unsalted butter
For the whipped cream
4 large egg whites
1/4 teaspoon cream of tartar
1 1/2 cups granulated sugar
For the cake
1 cup all-purpose flour
1/3 cup unsalted butter, softened
2-3 tablespoons cold water
For the filling
1/4 cup cornstarch
3 tablespoons all-purpose flour
1 3/4 cups granulated sugar
1/4 teaspoon salt
4 large egg yolks, slightly beaten
1/2 cup freshly squeezed lemon juice
1 tablespoon grated lemon zest
1 tablespoon unsalted butter
For the whipped cream
4 large egg whites
1/4 teaspoon cream of tartar
1 1/2 cups granulated sugar
Combine the cake ingredients and pour the mixture onto a lightly floured surface, forming a circle with a diameter of 27.5 cm
Place the dough into a round refractory mold, pressing it gently to the center of the mold
Gently press the edges to seal, then refrigerate for 1/2 hour
Bake the oven at strong heat (200°C)
Poke holes in the cake with a fork and bake for 8-10 minutes, or until golden brown
Remove from the oven and let cool
Mix together the cornstarch, flour, sugar, and salt in a medium saucepan
Gradually add 2 cups of water, stirring until smooth
Bake over medium heat, stirring constantly, until the mixture thickens
Add a little of the mixture to the egg yolks and beat well
Combine the egg yolks with the remaining mixture in the saucepan, stirring well and cooking for 5 minutes over low heat
Remove from the heat, add the remaining ingredients, and fill the cake
Bake the oven at 200°C
In a medium bowl, beat the egg whites and cream of tartar until stiff peaks form
Gradually add granulated sugar to the egg mixture, beating well after each addition
Beat until firm, then spread over the filling to the edge of the cake, rotating the spatula to decorate
Bake for 7-9 minutes or until the whipped cream is golden brown
Let cool completely, about 2.5 hours
To serve, cut with a damp knife.