But not just any old desert. The Hidden Orange Christmas puddings created by TV chef Heston Blumenthal for Waitrose have become a sell-out for the second year running, leaving canny customers to sell them on the internet for up to £150.

But the windfall may be short-lived as the super-market is about to restock its shelves with the product.

Waitrose, who won't reveal how many of the 75,000 puddings made have been sold, confirmed more would be hitting the shelves this week.