The “wolfberry fruit,” as goji berries are known in China, has been used in traditional Chinese medicine since around 200 B.C. They grow on a type of boxthorn plant that belongs to the Solanaceae plant family, which includes other fruits and vegetables like potato, tomato, aubergine and the chilli pepper. They are low in calories, high in protein for a fruit, fat-free, a good source of fibre and high in anti-oxidants, containing a wide range of phytonutrients and over 20 different vitamins and minerals. They can be eaten raw, dried, or in powder form.