Walnuts are edible nuts that are encased in a hard, two-part shell. They are oval-shaped and have a wrinkled, tan-colored shell. The nut itself has two halves, which are off-white in color and covered by a thin, paper-like skin. Walnuts are highly nutritious and are an excellent source of healthy fats, protein, fiber, vitamins, and minerals. They are particularly rich in omega-3 fatty acids, which are important for brain health, heart health, and reducing inflammation in the body. Walnuts also contain antioxidants, such as vitamin E and polyphenols, which protect cells from damage caused by free radicals. Walnuts can be eaten raw or roasted and are often used in cooking and baking. They are a popular ingredient in salads, trail mixes, and baked goods, and can be eaten on their own as a snack. Walnuts are also commonly used as a garnish or ingredient in savory dishes, such as pasta, rice dishes, and meat dishes.