Bakeries at odds over 'duffins' and 'cronuts'
10 October 2013 Last updated at 07:57 BST
A small London cafe, Bea's of Bloomsbury, is taking on coffee giant Starbucks over the ownership of the concept of the "duffin", a cross between a doughnut and a muffin.
The row follows the success of another hybrid, a cross between a croissant and a doughnut, which can only legally be called a "cronut" in the New York bakery where it was created.
Tim Muffett reports.