RAH-RAH Rutabaga! Deep purple on the outside and butter yellow on the inside, rutabagas are an excellent source of potassium, calcium, magnesium and vitamins E and C. Also known as neeps, swedes or waxed turnips, rutabagas are a versatile vegetable akin to a potato. For a crispy, sweet, and savory side dish try our recipe for Rutabaga Fries, it will have you rooting for rutabaga.