There exist at least 30 varieties of walnut cultivars. The three popular verities grown for the commercial purpose are the English or Persian walnut, the Black walnut, and the White or butternut walnut. After plantation, the tree takes approximately four years until it produces its first major crop. During each season, the fruits are ready for harvesting by August when the thick green hull begins to crack open to expose light brown colored hard-shelled “walnut.” Walnuts are revered since ancient times as a symbol of intellectuality, since their kernels have convoluted surface inside the shell resembling as that of brain! The nuts are enriched with many health-benefiting nutrients, especially Ω-3 fatty acids that are essential for optimum health. Walnuts are a good source of healthy fats, protein, vitamin E, minerals and phytochemicals called sterols. They are also rich in phytonutrients and are an excellent source of selenium, phosphorous, magnesium, zinc, iron, and calcium. Walnuts are protective against metabolic syndrome, cardiovascular problems, and type 2 diabetes.