Can Asda really do 'posh nosh'?

There's profits in posh, as supermarkets are finding out. After supermarket 'price wars' - did you really notice any big drops in the price of everyday goods? - supermarkets are now trying to tap other areas to turn a profit. Like posh food. Which is why Wal-Mart backed Asda has just struck a new deal with Leiths School of Food and Wine. Oh no, not more celeb-backed food.