These Hazel Nuts Roasted Turkey are of the highest quality and full of goodness. The filbert, often known as the hazelnut, is a nut that grows on the Corylus tree. Hazelnuts can be eaten raw, roasted, or mashed into a paste and have a sweet flavor. Hazelnuts are nutrient-dense, with a high protein, fat, vitamin, and mineral content. Turkey, Italy, Spain, and the United States are the main producers.