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Baker to Starbucks: I invented ‘duffin’ before you


American baker Bea Vo is the owner of adored London tearooms  “Bea’s of Bloomsbury,” and her customers enjoy her “duffin” creation, which is a cross between doughnut and a muffin. She featured them in her 2011 cookbook, and now Starbucks is selling duffins in the UK too. NBC’s Michelle Kosinski reports.