The walnut, also known as European walnut, is popular for its pleasant flavor and nutritional value, it belongs to the group of the so-called "nuts". It is the fruit of the walnut tree, and has been a popular component of the human diet for thousands of years. It is one of the oldest tree nuts.

Among the benefits of the castile nut are the following:

• It reduces blood cholesterol levels and improves blood circulation.
• Lowers the risk of cardiovascular disease.
• It is considered to possess antioxidants 15 times more powerful than vitamin E.
• Contains fiber.