Flaky pastry is a type of pastry made with thin layers of dough that are separated by butter or oil. The most popular flaky pastry is the NAPOLEON, which is made with layers of puff pastry and filled with custard or cream. FILO is another type of flaky pastry, which is made with paper-thin sheets of dough that are layered together and often filled with cheese or nuts. Both Napoleons and Filos are popular desserts and can be served either hot or cold.