I only tried a sample of a mochi donut (rice flour) so I can't say too much about the donuts but I took a shot of a couple of ones that looked interesting. Now, it wasn't around Valentine's Day, so I don't know why they had so many heart-shaped donuts. Maybe, they are popular to give to people you like? As for the square ones, I have no clue at all. They had your typical donuts as well.
While local competitor Mister Donut makes their donuts in each store, Dunkin' Donuts Taiwan saves money by making their donuts in regional factories and shipping them to most of their outlets which in my mind is pretty much like buying your donuts from the supermarket. Come on! There's nothing like the smell of freshly baked (or fried!) goods!
Where the focus of Dunkin' in the U.S. is now largely on coffee rather than donuts (so much so that their logo features a cup of coffee), the focus in Taiwan is very much on the donuts with around 60 different varieties.
