Learn all about this classic Purim cookie, and get tips to make triangle-shaped hamantaschen along with favorite recipes to try. Triangle-shaped cookies may not be the norm, but for the Jewish holiday of Purim, they're a special treat. Named for the three-pointed hat worn by Haman, the villain of the event in Jewish history that Purim commemorates, hamantaschen are a must-have on Purim menus. Before you get started, check out these tips to make hamantaschen from Edan Leshnick, pastry chef at Manhattan's Breads Bakery, which makes special seasonal hamantaschen each spring. "You could make minis or extra large, giant hamantaschen," Leshnick says.