Place cake flour and butter in a bowl and break up the mixture by hand until well combined.
Add sugar and salt, mix, then add cold water and knead into a dough.
Wrap the dough in plastic wrap and let it rest in the refrigerator for 30 minutes.
Roll out the dough with a rolling pin and line the tart mold with it.
Prick the base with a fork and prebake in the oven at 180°C for 10 minutes.
In a bowl, mix eggs, sugar, milk, heavy cream, and vanilla extract.
Strain the mixture and pour it into the tart shell.
Bake in a preheated oven at 180°C for 20–25 minutes.