Filbert is a type of hazelnut that is commonly used in cooking and baking. It has a round shape and a smooth, brown shell. The nut is rich in healthy fats, vitamins, and minerals, making it a nutritious snack. Filberts are often found in desserts, chocolates, and spreads, such as Nutella. The filbert tree, known scientifically as Corylus avellana, is native to Europe and parts of Asia. It thrives in temperate climates and can grow up to 20 feet tall. The tree produces clusters of nuts that are harvested in late summer to early fall. Filberts are also popular in various culinary traditions around the world.