@Sphinx @bonifartius "Filmjölk (Swedish: [ˈfîːlmjœlk]), also known as fil, is a traditional fermented milk product from Sweden, and a common dairy product within the Nordic countries. It is made by fermenting cow's milk with a variety of bacteria from the species Lactococcus lactis and Leuconostoc mesenteroides.The bacteria metabolize lactose, the sugar naturally found in milk, into lactic acid"