Technical Stages :

• Bring the milk to a boiling point.
• Mix the egg yolks and sugar and whisk until pale and light.
• Combine the flour.
• As soon as the milk starts boiling, pour it at once on the eggs, whisking.
• Transfer back to the milk pot and cook over medium heat for 4 to 5 minutes, constantly stirring. Beware that the cream doesn't stick to the bottom of the pan.
• Empty the cream in a bowl and let it cool.
• Whip up the whipping cream into whipped cream.
• Combine the cold whipped and pastry creams.
• Use quickly (do not prepare too long in advance).