They have become the new must-have middle-class foodie obsession. But at £2 for (admittedly, a very beautiful) tin, here's what's REALLY going into each can of Mutti tomatoes... ○

They're a staple of cupboards everywhere, the base of a good bolognese or chilli - and can cost as little as 43p on supermarket shelves. But Mutti, fans insist, is different.