While the eurozone teeters on the brink, the M&G eggheads have been busy delving into the unknown. Last week it was the correlation between stay at home adults and credit default spreads. This time, it is the relationship between Monster Munch and food inflation.

Going back to the dark days on 1988, M&G compared the size of a packet Monster Munch crisps (a snack dear to the heart of many a school kid), to food inflation. The cost of the crisps, perhaps best known for its pickled onion flavour, is rising at a faster rate than food inflation, but at a similar rate as the price of maize, the primary ingredient.