Sufganiyot are traditional jelly-filled doughnuts that are popular during the Jewish festival of Hanukkah. These sweet treats are typically deep-fried in oil, symbolizing the miracle of the oil that lasted eight days in the Temple. The dough is usually made from flour, sugar, eggs, and yeast, and is often filled with fruit preserves or custard. After frying, sufganiyot are dusted with powdered sugar or glazed, making them a festive and delicious part of Hanukkah celebrations.