Mille-feuille, also known as "Napoleon," is a classic French pastry made of layers of puff pastry and pastry cream. The name translates to "a thousand leaves," referring to the many thin layers that create its delicate texture. Traditionally, it consists of three layers of pastry and two layers of cream, often topped with a glaze or powdered sugar. This dessert is popular in many countries and can be found in various forms. Some variations include fruit or chocolate fillings, while others may use whipped cream. Mille-feuille is often enjoyed with coffee or tea and is a staple in French patisserie culture.