Prepare the pastry cream the day before or at least 2 h before preparing the diplomat cream.
Put a portion of the 60 g of sugar in a saucepan and pour the milk over it. Do not mix. This sugar forms a layer at the bottom and prevents the cream from sticking and burning.
Scrape 1/2 vanilla bean and place the seeds and pod in the milk.
Cover and heat over the stove to warm without bringing to a boil.
Remove from heat and let infuse for 20 minutes.
Rehydrate the gelatin sheet in very cold water. Completely cover it.
Whisk the remaining 60 g of sugar with the egg yolks until pale.
Sift the flour and cornstarch over the mixture. Stir gently without whisking.
Bring the milk to a boil.
Pour over the eggs and mix. Pour back into the saucepan.
Thicken over heat, stirring constantly. Remove from heat once the pastry cream starts to bubble.
Add the squeezed gelatin, mix well, then add the cold butter while stirring.
Transfer to a dish. Cover with plastic wrap directly touching the surface to prevent it from forming a skin, and refrigerate overnight or for a minimum of 2 hours.
Once the pastry cream is cold
Whip the well-chilled heavy cream with the powdered sugar until stiff peaks form.
Smooth the pastry cream with a hand whisk or immersion blender.
Add a bit of the whipped cream to the pastry cream and whisk together.
Gently fold in the remaining whipped cream using a spatula.
Transfer to a piping bag and let it chill in the refrigerator for about twenty minutes before piping over the dacquoise.
Decorate with strawberries according to your preference. You can either brush a bit of neutral glaze over the strawberries to make them shine or sprinkle the edges of the dacquoise with powdered sugar, along with the strawberries.
I hope you enjoy this strawberry dacquoise tart and want to give it a try. Enjoy your meal.