Mandelbrot is a traditional Jewish cookie that is often enjoyed during Purim. It is similar to biscotti and is made by mixing together flour, sugar, eggs, and oil, and then adding in chopped nuts and dried fruits. The dough is shaped into logs and baked until golden and crispy. Once cooled, the logs are sliced into individual cookies. Mandelbrot is a delicious and crunchy treat that pairs well with a cup of tea or coffee. It is a popular choice for Purim because it can be made in advance and enjoyed throughout the holiday.