Wikipedia
Koloocheh or Kulucheh is an Persian cookie made in various parts of Iran. It is prepared for the Norooz New Year's celebration in the south of Iran. Different regions of Iran have different Koloochehs. In the Caspian sea region of northern Iran, Koloochehs most notably come from Lahijan and Fuman. Other regions, such as Shiraz, Kashan and Yazd in central Iran also have their own Koloocheh.
Koloochehs differ in taste and consistency from region to region. Those from Fuman are larger than most other regions in Iran (approximately 4 inches in diameter and 1/2 of an inch thick). Iran's most famous Koloochehs come from Lahijan. Although recently additional flavors such as chocolate have been added, Lahijan Koloochehs traditionally come in Walnut or Coconut varieties and are approximately 2 inches in diameter and 3/4 of an inch thick. The Kashan Koloochehs are much smaller (approximately 1 inch or less in diameter and 1/2 of an inch thick).
Koloochehs from southern Iran are brittle biscuits that principally consists of water, sugar, wheat flour and egg white. Masghati is a transparent soft confection which consists of rose water, starch, sugar and water. Koloocheh and Masghati are souvenirs of Shiraz.