Bombolone

Bombolone is an Italian filled doughnut (similar to Berliner and pączek), eaten as a snack food and dessert. The pastry's name is etymologically related to bomba (lit. 'bomb'), and the same type of pastry is also called bomba (pl.: bombe) in some regions of Italy. While bomboloni may be primarily connected to Tuscany, they are traditional to other regions of Italy, although with slight variations on the recipe. In those areas that used to be under Austrian rule, such as Trentino-Alto Adige, Veneto, and Friuli-Venezia Giulia, the tradition of bomboloni is believed to have originated from that of Austrian "krapfen" (i.e., Berliner), and the recipe includes eggs, which are not found in the Tuscan variety.

Source: Wikipedia