To quote the website at, with apologies to Norwegians everwhere, they found an article in the cooking supplement of a Swedish newspaper which read "with this recipe, start with a fresh sea trout. Gut it and prepare the fish, then it out the back and bury it in the compost heap. Check every day and when the compost heap and the fish smell about the same, dig up the fish, throw it away and eat the compost heap"