Small shiny dark-brown seeds about the size of sesame seeds, linseeds (also called flaxseeds) are a storehouse of omega-3s.
They're the richest plant source of one particular fatty acid called alpha-linolenic acid (ALA), a building block of the omega-3 oils found in fish.
Linseeds are also rich in lignans, a type of plant oestrogen that lowers female oestrogen levels, helps minimise the unpleasant side effects of the menopause like flushing and has anti-tumour properties.
Again in the plant kingdom, there aren't many foods where you'll find lignans. So they're a very important food for vegetarians who eat no eggs or fish and may run the risk of going short on DHA, a special omega-3 fatty acid. One or two tablespoons is all it takes to boost your intake.
One tablespoons of linseeds (weighing 28g) supplies: 6 g protein, 10 g fat including 2 g saturated fat, 10 g carbohydrate including 2 g sugars, 8 g dietary fibre and 580 kilojoules (138 calories).
20 per cent protein, 34 per cent fat including 7 g saturated fat , 7 per cent sugars, 27 per cent starch, 28 per cent dietary fibre and 2070 kilojoules (493 calories).