01 - Preheat oven to 350°F. Grease and line two 8-inch round cake pans with parchment paper.
02 - In a large mixing bowl, beat eggs, granulated sugar, and salt on high speed with an electric mixer for 5 to 7 minutes until thick, pale, and tripled in volume.
03 - Gently fold in all-purpose flour and vanilla extract with a spatula, ensuring the batter remains airy and well combined.
04 - Divide the batter evenly between the prepared pans. Bake for 20 to 25 minutes, or until the cakes are golden and spring back when pressed lightly.
05 - Remove cakes from oven and let cool in pans for 10 minutes. Then turn out onto a wire rack and allow to cool completely.
06 - In a mixing bowl, whip heavy cream, powdered sugar, and vanilla extract until soft peaks form.
07 - If desired, spread a thin layer of strawberry jam over one cooled cake layer. Spread half the whipped cream over this base and top with half the sliced strawberries.
08 - Place the second sponge layer on top. Spread remaining cream over the top and arrange the remaining strawberries decoratively.
09 - Garnish with fresh mint leaves if desired. Refrigerate for at least 30 minutes before slicing for best texture and flavor.