Although it hasn¡¯t nabbed the same headlines as the Cronut, the Cruffin ¡ª a croissant-muffin hybrid invented by Australian baker Kate Reid in 2013 ¡ª has achieved modest success in the U.S. Bakery chain Mister Donut has brought the fusion food to Japan (thankfully, they left the clunky ¡°Cruffin¡°...