Popular chocolate bars Mars, Bounty, Milky Way, Snickers and Twix, as well as Minstrels, Maltesers choclate sweets, will no longer be suitable for vegetarians, because Masterfoods the company who make the products, said it had started to use rennet, which comes from the stomachs of calves.
Masterfoods say this has happened because they changed the sourcing of the ingredients used, however, the Vegetarian Society said the move was "incomprehensible" and that they are "extremely disappointed" by this news.
Masterfoods admit they began using rennet from 1 May 2007, and non-affected products had a "best before date" up to 1 October.
