Icelandic cooking, recipes and food

As with some of the other recipes on this blog, this is fairly recent, no older than 20th century and probably originated in Denmark. The soup is made with the kind of sweet fruit or berry concentrate that is meant for mixing with water for drinking. Because the concentrates come in different thicknesses and need different amounts of water for mixing to the right flavour I am not giving exact measurements. The soup can be made with different types of concentrate, but the Icelandic version is often made with mixed fruit concentrate. When I say concentrate, I am not referring to the pure concentrated juices you can buy frozen or canned, but the sweetened stuff that is halfway to being syrup because of its sugar content, but I have no doubt that if pure juice concentrate were to be used it would yield a delicious soup. I suggest trying it with strawberry, raspberry, cherry or pomegranate concentrate, or some other red or reddish juice. If pure unsweetened concentrate is to be used, I sugg