Mustikkakeitto

Blåbärssoppa is a Nordic fruit soup made from bilberries, which can be served cold or hot. It is sweet and contains starch, which gives it a fairly thick consistency. It is served either as soup, often together with porridge, or as a drink. In the United States, Swedish blåbärssoppa is imported and sold under the trade name Blåbär. Blueberry soup can be home-made from bilberries, sugar, water and potato starch, or it can be bought ready-made or in powdered form, to mix with water.

Source: Wikipedia