A variety of winter squash known as butternut squash, butternut pumpkin, or gramma grows on a vine. Its flavor is comparable to that of a pumpkin—sweet and nutty. It features orange meaty pulp with tan-yellow peel and a compartment of seeds at the blossom end. It becomes richer and sweeter as it ripens, turning an ever-deeper shade of orange. In addition to being a source of vitamin A, it is a rich source of fiber, vitamin C, magnesium, and potassium.