FOR THE CAKE
1 1/4 cups all-purpose flour, ground in a blender (125 g)
1/3 cup unsalted butter, softened at room temperature (65 g)
1/2 teaspoon ground cinnamon
1/4 cup confectioners' sugar (45 g)
FOR THE FILLING
4 large egg yolks and whites separated, at room temperature
1/2 cup freshly squeezed lemon juice
1 cup granulated sugar (180 g)
1/4 teaspoon salt
1 envelope unflavored gelatin (12 g)
1/4 cup cold water (60 ml)
2 tablespoons grated lemon zest
2 drops yellow food coloring (optional)
1/2 cup heavy cream (120 ml)
FOR DECORATION
1/2 cup heavy cream (120 ml)
2 tablespoons granulated sugar
FOR THE CAKE
1 1/4 cups all-purpose flour, ground in a blender (125 g)
1/3 cup unsalted butter, softened at room temperature (65 g)
1/2 teaspoon ground cinnamon
1/4 cup confectioners' sugar (45 g)
FOR THE FILLING
4 large egg yolks and whites separated, at room temperature
1/2 cup freshly squeezed lemon juice
1 cup granulated sugar (180 g)
1/4 teaspoon salt
1 envelope unflavored gelatin (12 g)
1/4 cup cold water (60 ml)
2 tablespoons grated lemon zest
2 drops yellow food coloring (optional)
1/2 cup heavy cream (120 ml)
FOR DECORATION
1/2 cup heavy cream (120 ml)
2 tablespoons granulated sugar
Makes the cake: Mix the flour with butter, cinnamon, and confectioners' sugar to form a crumbly mixture
Line a 24.5 cm diameter round springform pan with parchment paper
Use your fingers or a spatula to press the mixture into the bottom and up the sides of the pan
Refrigerate for at least 2 hours
Makes the filling: In a heatproof bowl, beat the egg yolks until they become pale and creamy
Add the lemon juice, half of the granulated sugar, and salt
Place the bowl over a pot of simmering water, ensuring that the bottom of the bowl does not touch the water
Cook, stirring constantly, for 8 to 10 minutes or until the mixture thickens and coats the back of a spoon
Add the gelatin to the lemon mixture and stir until dissolved
Add the grated lemon zest and food coloring (if using)
Remove the bowl from the heat and let it cool slightly
Melt the gelatin in cold water, then add it to the lemon mixture
Beat until smooth
Beat the egg whites until they become stiff and hold their shape
Gradually add the remaining granulated sugar, beating until stiff peaks form
Fold the egg whites into the lemon mixture using a spatula or spoon
Makes the whipped cream: Beat the heavy cream until it becomes stiff and forms soft peaks
Combine the whipped cream with the cake mixture, stirring gently
Pour the batter into the prepared pan and refrigerate for at least 3 hours or until firm
Decorates: Beat the heavy cream and granulated sugar until stiff peaks form
Pipe the whipped cream onto the cake using a piping bag fitted with a star tip
Serve chilled
341 calories per serving