Genus Corylus, commonly known as Hazelnut, is a nut producing plant grouping which has been categorized into several different species. These species share many similarities in terms of their physical characteristics and nutritional benefits, making them a staple food source in many cultures worldwide. Among the different synonyms for this genus, some of the most popular ones are Turkish Hazel, Persian Hazel, European Hazel, and American Hazel. Each species has its own unique set of qualities, from flavor to size, and nutritional content. Hazelnuts are a rich source of dietary fiber, healthy fats, and essential vitamins like Vitamin E. Adding hazelnuts to your daily diet can promote heart health, improve digestion, and boost cognitive function.