– Bilberry fruit is also known as Winberry, Whortleberry, and Huckleberry. – The plant is a deciduous shrub native to Europe and is closely related to the blueberry. – The dark-purple berries are used to make jams, cakes and pies, especially popular in the North of England. – During World War II, RAF pilots would eat bilberry jam before a mission as they believed it sharpened their eyesight. – Bilberries are a good source of flavonoids and anthocyanin pigments. – These anthocyanins have been found to improve circulation in scientific studies. – Berries are a good source of natural vitamin C.