A walnut is the nut of any tree of the genus Juglans, particularly the Persian or English walnut, Juglans regia. Technically a walnut is the seed of a drupe or drupaceous nut and thus not a true botanical nut. Walnut is the main ingredient of Fesenjan, a khoresh (stew) in Iranian cuisine. Walnuts are also popular in brownie recipes, as ice cream toppings, and walnut pieces are used as a garnish on some foods.Nocino is a liqueur made from unripe green walnuts steeped in alcohol with syrup added. Walnut contain good fats, such as monounsaturated and polyunsaturated fats, but they are also a good source of the essential fatty acid omega-3. They also contain iron, selenium, calcium, zinc, vitamin E and some B vitamins.

A walnut is the nut of any tree of the genus Juglans, particularly the Persian or English walnut, Juglans regia. Technically a walnut is the seed of a drupe or drupaceous nut and thus not a true botanical nut. Walnut is the main ingredient of Fesenjan, a khoresh (stew) in Iranian cuisine. Walnuts are also popular in brownie recipes, as ice cream toppings, and walnut pieces are used as a garnish on some foods.Nocino is a liqueur made from unripe green walnuts steeped in alcohol with syrup added. Walnut contain good fats, such as monounsaturated and polyunsaturated fats, but they are also a good source of the essential fatty acid omega-3. They also contain iron, selenium, calcium, zinc, vitamin E and some B vitamins.