Cranberries are a red tart berry that can be blended into smoothies made into juices or turned into baked goods. Dried cranberries are literally just cranberries that have had their water content removed. In general one cup of fresh fruit becomes a quarter cup of dried fruit. This means that a quarter cup is a serving size for dried fruit like cranberry. Dried blackberries are a satisfying snack rich in both soluble and insoluble fiber. Research suggests that eating foods rich in soluble fiber can help lower cholesterol and regulate blood sugar levels. The insoluble fiber content of dried blackberries supports the digestive system and prevents overeating.