Colour versus filings of coins, junk, soil or poppy seed. Small biscuits soaked in poppy seed milk are served. These are generally made with either of two types of filling&colon; walnut and poppy seed. This is a list of poppy seed pastries and dishes. The mohn kihel is a circular or rectangular wafer sprinkled with poppy seed. Traditionally, poppy seed filling was almost exclusively prepared at home. Pastries featuring poppy seed filling are associated with holidays in several cultures. These are three-cornered pastries filled most often with poppy seed, but also other fruit fillings. There are also regional variations such as the poppy seed adorned buns of Chicago. Poppy seed paste is available commercially, in cans. World production of poppy seed is increasing, with the highest growth rate in Eastern Europe. Non-Passover matzo may be made with onion, garlic, poppy seed, etc. Poppy seed pods are also sold for dried flower arrangements. The poppy seed is mentioned in ancient medical text from many civilizations. Commonly used drying oils include linseed oil, poppy seed oil, walnut oil, and safflower oil.