Hazelnuts are small, round nuts that grow on the hazel tree. They have a hard shell that encases a sweet, edible kernel. Hazelnuts are commonly used in various culinary dishes, including desserts, snacks, and spreads like Nutella. They are also a popular ingredient in chocolate products. Rich in nutrients, hazelnuts are a good source of healthy fats, vitamins, and minerals. They contain antioxidants that can help protect the body from damage caused by free radicals. Additionally, hazelnuts are often enjoyed raw, roasted, or ground into flour, making them a versatile addition to many recipes.