Easy Strawberry Cake So Fluffy And Melt in Your Mouth 👄

For the Sponge Cake (Génoise) 1 vanilla bean 120 g of sugar 100 g of flour 50 g of butter 4 eggs For the Syrup and Garnish 250 to 500 g of strawberries, depending on your love for strawberries :) 150 g of sugar 20 cl of water Vanilla For the Cream 20 cl of heavy cream 25 cl of semi-skimmed milk 2 egg yolks 40 g of cornstarch 50 g of sugar 1 g of agar-agar or 2 sheets of gelatin 1 vanilla bean or 1 sachet of vanilla sugar 😊🍓