What is tuille?

Tuille, also spelled as tuile, is a thin, crispy French biscuit that is shaped like a roof tile. It is traditionally made with flour, sugar, butter, and egg whites, and is baked until it forms a delicate and crunchy texture. Tuille is often presented in curved or twisted shapes, and can be served as a dessert item or as a decoration for other desserts, such as ice cream or mousse. The name "tuile" comes from the French word for "tile", as its shape resembles that of the curved tiles used on roofs. Tuille is popular in French cuisine and can be found in many patisseries and bakeries around the world.