The origin of the hazelnut dates back to ancient times. They extended to Europe, where they constituted one of the oldest agricultural cultivations. Hazelnut culture was known to the ancient Greeks and Romans. The nuts were thought to have medicinal qualities in addition to their food value.
The principal hazelnut producing countries are Turkey, Italy, Spain, and the United States of America. The hazelnut is marketed in in-shell and shelled form, roasted or salted. Hazelnuts are used in the confectionary industry and for the preparation of many food products like spreads, nougat and chocolates.
A handful of Hazelnuts is a rich source of B group vitamins and minerals such as folic acid, vitamin E, copper and magnesium.