Mojakka is a fish soup originating in the region of Kalajoki, Finland, the memory of which is mostly now preserved only by descendants of the Finnish settlers of the Great Lakes region of the United States and Canada.
In its original form in Finland, mojakka contains whitefish or baltic herring, butter, salt, whitewash (a flour and water mixture for thickening), and onions. No potatoes or other vegetables are added, but Finnish immigrants to the U.S. and Canada created recipes for beef or venison stews that they called mojakkas. As a result, the fish version came to be called kalamojakka.
The word for soup in modern Finnish is , so what Finnish-Americans call kalamojakka is known in Finland as kalakeitto.