Brits are throwing away almost 50m litres of wine a year, which in monetary terms equates to a massive £470m.The staggering figures are a result of a huge amount of wine being poured down the sink, due in part to Brits not knowing how long it stays fresh in open bottles, and too much wine being served at a time. In a step towards curbing the amount of perfectly good wine being discarded, Asda has launched a range of ‘wine cubes’, with the liquid being resourced from top quality, award-winning producers.