Since it launched last month, the cronut – half croissant, half doughnut - cited by some as “the next cupcake”, has become one of the most tried-out recipes of the year so far. Even its name has been trademarked thus imitation products - doissants, croissant-donuts - are being tested daily. According to information from Bakeryinfo.co.uk, around 7,800 have been sold to date.