 These are three-cornered pastries filled most often with poppy seed, but also other fruit fillings.The triangular shape may have been influenced by old illustrations of Haman, in which he wore a three-cornered hat.The week-long holiday of Passover in the spring commemorates the Exodus from Egypt, and in Israel is usually a time for visiting friends and relatives, travelling, and on the first night of Passover, the traditional ritual dinner, known as the Seder.