We throw away 600,000 tonnes of food and drink every year from home, costing us over £1billion a year. Every item of food that is produced, distributed and stored requires energy from industry and transport to get it onto our plate. Cooking food uses energy, fuel and water. If we then throw that food away, all of the energy has been wasted while the greenhouse gases that contribute to climate change have increased. Find tips on how to reduce your food waste, use leftovers and also save money..