Luumukiisseli

Kissel or kisel[a] is a simple dish with the consistency of a thick gel, and made of sweet fruit, berry, grains , peas, or from milk. It belongs to the group of cold-solidified desserts, although it can be served warm. "Kissel" is derived from a Slavic word meaning 'sour', after a similar old Slavic dish—a leavened flour porridge (or weak sourdough) which was made from grain, most commonly oats, but any grain, including legumes like peas or lentils could be used. Bean kissels were typically not leavened, and lacked the sweetness of the modern variants.[citation needed] Grain-based kissels were known 9000 years ago in ancient Anatolia and Mesopotamia, they are mentioned in Sumerian and Akkadian texts. In ancient times, oatmeal kissel was prepared by fermentation of oat milk.

Source: Wikipedia