Mandelbrot is a traditional Jewish cookie that is similar to biscotti. It is made with a sweet and buttery dough that is studded with nuts, such as almonds or walnuts, and flavored with cinnamon and vanilla. The dough is shaped into logs and baked until golden brown. Once cooled, the logs are sliced into individual cookies and baked again until crispy. Mandelbrot is perfect for Purim because it can be made in advance and stored for several days. It is a delicious treat to enjoy with a cup of tea or coffee during Purim celebrations.