Filmjolk is a Nordic dairy product that has been around since the 9th century. It has a mild cheese-like flavor that is thicker than kefir but thinner than regular yogurt, and is sweeter and less sour than typical yogurt. Filmjolk is made by creating a starter culture from milk and filmjolk culture, then adding that starter to additional milk and culturing it at a lower temperature than yogurt to develop its unique taste. Filmjolk offers several health benefits such as improving digestion, boosting the immune system, and aiding those with constipation or lactose intolerance.