Krapfen was probably the first European-style doughnut to appear, followed by similar varieties in other countries. These pastries are traditionally prepared with leavened dough that is deep-fried until golden and crispy on the outside, while they remain soft, light, and airy on the inside.
Though krapfen can be prepared plain, they are most often filled or topped with jams, and vanilla or chocolate custards, while the top is usually dusted with powdered sugar or drizzled with chocolate. The origin of the word krapfen dates back to 9th century, and the recipes in German can be found as early as the 14th century.
It is believed that doughnuts spread throughout many central European countries, which adopted the technique but used different regional names. Consequently, krapfen in Germany goes under Berliner, pfannkuchen, faschingskrapfen, krebbel, or kreppel.
In Poland, they are known as pączki or krepel, Hungarians refer to them as fánk, Slovak as šišky, while the Czechs use the term koblihy. In Slovenia, they are better known as krofi, while the standard name throughout Croatia, Bosnia, and Serbia is krofne or krafne.