Cranberries are a popular superfood. People can consume them in the form of a sauce or a juice. They can also add them to stuffing casseroles or dessert. These highly nutritious berries are also a staple of Thanksgiving dinner. Many people consider cranberries to be a superfood due to their high nutrient and antioxidant content. we know cranberry sauce as a staple at the holidays but cranberries are a superfood that you should anjoy all year around. Cranberries are primarily made up of carbs and fiber. They also boast several vitamins and minerals including manganese copper and vitamic c. Cranberries are small hard round red fruits with a flavor that many describe as both bitter and sour.