Cashews have a buttery, sweet, and salty taste, an unmistakable shape, and they are an excellent source of vitamins and minerals. They grow on cashew nut trees, which are native to subtropical climates. Although cashews are one of the lowest-fiber nuts, they are packed with vitamins, minerals and antioxidants. These include vitamins E, K, and B6, along with minerals like copper, phosphorus, zinc, magnesium, iron, and selenium, all of which are important for maintaining good bodily function.