Learn about the hazelnut , the fruit of the hazel tree, and its history, production, and culinary applications. Discover the different types of hazelnuts, such as cobnuts, filberts, and Tonda Gentile, and how they are grown and harvested. Hazelnuts are the edible nuts of the hazel tree (Corylus). They are also known as filbert nuts or cobnuts, depending on the species. Hazelnuts are Learn about the nutritional value and health benefits of hazelnuts, a delicious type of tree nut. Hazelnuts are rich in vitamin E, manganese, copper, fiber, protein, and polyphenols, and may have positive effects on cardiovascular risk markers. Hazelnuts are a delicious snack, and they provide a range of benefits, including improving heart health and reducing inflammation. In this article, we look at the science behind the benefits of ...