Mille-feuille also written as Millefeuille (in French meaning ‘thousand sheets’), known also as Napoleon, is a two or three layer sandwich of puff pastry, alternating with a sweet filling, typically pastry cream, but sometimes whipped cream, or jam.
Diplomat cream
Pastry cream, which is also known as Custard cream or Crème pâtissière, in a French, is a rich, thick and creamy custard made from a mixture of milk, eggs, sugar, flour, and cornstarch. In Greece it is known as Patisserie.