Hamantaschen are traditional Jewish pastries typically enjoyed during the festival of Purim. They are shaped like triangles and are filled with various sweet fillings, such as poppy seeds, fruit preserves, or chocolate. The name "Hamantaschen" translates to "Haman's pockets," referring to the villain Haman from the Book of Esther. These cookies symbolize the defeat of Haman and are often baked and shared among family and friends during the celebrations, making them a beloved treat in Jewish culture.