Raspberries, blueberries, blackberries and strawberries have a lot of nutrients to offer. Berries are low in fat and sodium and are cholesterol-free. They are all good sources of fiber and vitamin C. Strawberries, raspberries and blackberries are also a source of folate, potassium, iron and riboflavin.  Freezing berries is a good way to preserve them for use in baked dishes. They can be enjoyed with cereal, salads, and meat dishes. They make great snacks mixed with yogurt or served with cheese.