Chia seeds are derived from the desert plant Salvia hispanica, a member of the mint family. These black or white versatile seeds can be eaten raw or added to dishes.They have an unusually high content (18%) of omega-3 fatty acids – essential fats that are important for heart health and brain function. Of the 30% total fat found in chia seeds, more than half is alpha linolenic acid (ALA), which is the plant form of omega-3.They have outstanding fibre content. Chia's 34% fibre is higher than that of flaxseeds (linseed) or sesame seeds, and works out to be about 10g in two tablespoons (which would make a significant contribution to the 25–30g it's recommended we consume daily).They are also an excellent source of protein and extremely high in calcium – at 631mg per 100g, this is five times the level in milk (although it may not be so readily absorbed).Chia is also a source of other important minerals including iron, magnesium and zinc.