Mandelbrot is a Jewish biscotti-like cookie that is often enjoyed during Purim. It is made by combining flour, sugar, eggs, oil, and almonds, and baking it until golden brown. The dough is typically shaped into a log and baked, then sliced into individual cookies. Mandelbrot is a crunchy and slightly sweet cookie that is perfect for dipping in a cup of tea or coffee. It is a beloved treat during Purim and is often shared with friends and family.