• Green barley grass is harvested from young barley plants no taller than 25cm. By using these young plants, we ensure that optimal minerals and vitamins are retained in the plant’s leaves. Of particular note are the high levels of chlorophyll present in green barley (chlorophyll is the plant equivalent of haemoglobin in humans). There are some differences between barley kernels (as cooked in cereal or other dishes) and green barley grass, the most notable of which is the presence of chlorophyll in the latter.