Walnuts are small round shaped nuts covered by a hard shell. They are consumed worldwide and are known for their uncommon and bitter taste. They are eaten by people of all ages and various cuisines are prepared using this tasty nut. They are extensively used in the preparation of walnut brownies and cakes. It is usually consumed as an evening snack as it is filling and is also used for garnishing to provide a nice blend of flavor. Let us look at the nutritional and health benefits of walnuts.