7 Ways Hazelnuts Benefit Your Health The hazelnut, also known as the filbert,( Hazelnuts Benefit ) is a type of nut that comes from the Corylus tree. It is mostly cultivated in Turkey, Italy, Spain, and the United States. Hazelnuts have a sweet flavor and can be eaten raw, roasted, or ground into a paste. Hazelnuts Benefit . Like other nuts, hazelnuts are rich in nutrients and have a high...