Pistachios are one of the most popular nuts in the United States. They are often consumed on their own, or used as a flavoring in many other foods. This particular nut is made from all-natural ingredients, including raw, roasted, or shelled pistachios.Pistachios are the best nuts in the world! The most popular type of pistachio is the natural pistachio nut, which is simply a nut that has been left to ripen on the tree. They re typically larger and more plump than shelled pistachios, which means that they have a higher nut-to-shell ratio.