Mix the eggs and granulated sugar with a flat beater on a low speed. Add the flour sieved together with the baking powder, then the hot knobs of butter and the orange blossom. Pour the mixture into a 1 cm-deep 30 cm square biscuit tin placed on a ‘silpat’ sheet on a baking tray (in case it runs). Cook in a fan oven at 170°C (338°F), for about 12 min.
Mix the eggs, icing sugar, ground almonds and flour. Add the whipped egg whites stiffened with the granulated sugar, and finally the melted butter. Spread the biscuit in a 1 cm deep 60 cm x 40 cm baking tin. Cook in a fan oven at 200°C (392°F), for 7 to 8 min.
Soften the strawberry pulp, add the granulated sugar and blend in the melted gelatine mixture. Pour the jellified coulis into the 30 cm square baking tin on top of the madeleine biscuit. Leave to harden slightly and cover with the Joconde biscuit then place in the deep freeze.
Make a custard using the milk, egg yolks and granulated sugar cooked at 85°C (185°F). Whip the custard in a beater with a whisk then mix in the softened butter using a paddle, and then the Italian meringue.
Whip the two creams together.
Take the tin with the biscuits and jellified coulis. Spread 300 g of strawberry gateau cream across the whole surface. Arrange the strawberries placing them as close as possible to each other. Cut off the tips of the strawberries so that they are at the same level. Sprinkle with a bit of granulated sugar and kirsch. Cover and fill the spaces with the malleable strawberry gateau cream and put the second Joconde biscuit on top. Place in the fridge for at least 2 hrs. Smooth the top with Italian meringue. Scorch gently with a blow-torch and coat in a transparent glaze. Chill for 5 to 6 hrs so that the strawberry gateau cream fully sets before cutting up into portions.