Hazelnuts are nutrient-rich nuts that come from the hazel tree, commonly cultivated in regions like Turkey, Italy, and the United States. Known for their slightly sweet, earthy flavor, they are often used in both sweet and savory dishes, including chocolates (like Nutella), baked goods, and salads. Hazelnuts are packed with healthy fats, fiber, vitamins (especially vitamin E), and antioxidants, making them beneficial for heart health and overall wellness. They can be eaten raw, roasted, or ground into flour or paste, and are a popular choice for gluten-free and plant-based diets.