Blueberries are smooth skinned, small and round shaped. They are dark blue to blue black in colour. Blueberries are sweet tasting and the darker the skin they have, the sweeter they will taste. Blueberries are available all year round. Storage Place blueberries on a shallow tray which is lined with paper towel, cover in the fridge and eat as soon as possible. Nutrition Blueberries are low in calories and high in nutrients. They are a good source of vitamin C and dietary fibre. Ideal For Blueberries can be used in muffins, pies, on ice cream or made into jam. They are also great in fresh fruit salads.