What is the name of the German doughnut often filled with jam?

The German doughnut often filled with jam is called a Berliner.

A Berliner, also known as a Krapfen or Berliner Pfannkuchen, is a round, yeast-raised doughnut fried in fat or oil without a central hole. It is typically injected with fruit jam after frying and finished with powdered sugar, granulated sugar, or icing. Apricot, plum, raspberry, and strawberry fillings are common.

The pastry has a long Central European history. A 1485 German cookbook contains a recipe for jam-filled yeasted dough fried in lard, although the exact origin of the recipe is unknown. The doughnut became associated with Berlin and later acquired names such as Bismarck in some regions.

Names vary across Germany. In Berlin itself, the pastry is commonly called a Pfannkuchen, while “Berliner” is widely used elsewhere. The famous “Ich bin ein Berliner” story also causes confusion: President John F. Kennedy’s phrase was grammatically meaningful and was not a doughnut mistake.