Independent - The phrase “water footprint” was coined to describe the embedded or “virtual” water in a food or industrial product – the real volume of water used to create that product. It is difficult to avoid using products which have not been involved in a water-intensive process somewhere along the line, and the figures are staggering: it takes 1,760 litres to get one pint of milk out of a cow and into your fridge; a kilogram of cheddar swallows up 5,000 litres.

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