I didn’t know what that donut thingy is called in English so I looked it up at home. According to Wikipedia:
Sata andagi (サーターアンダーギー Sātā andāgī?) are sweet deep fried buns of dough similar to doughnuts, native to the Japanese prefecture of Okinawa. They are also popular in Hawaii, sometimes known there simply as andagi. Traditional Okinawan andagi is made by mixing flour, sugar and eggs. The ingredients are mixed into a ball and deep fried.