Quiche is a savory or sweet dish that originated in the Lorraine region of France. It consists of a custard base made with eggs, milk and cream, usually seasoned with nutmeg and salt, and filled with various ingredients such as cheese, meats, vegetables, or fruits. The filling is placed on top of a pie crust, which can be either homemade or store-bought, then baked until the custard has set. Quiche is considered a versatile dish that can be served for breakfast, lunch, dinner, or even as a snack, and it's popular all over the world.