Kitkan viisas is a vendace of the species Coregonus albula caught in the river basin of the Koillismaa highlands near the Arctic Circle of the northern hemisphere, where the lakes are covered by ice from October to May. This dark colored fish is small (7-9cm) and has a soft backbone due to the low levels of nutrients in the water.
After the fish is caught, it is cleaned, and at least, the guts and gills are removed. It is possible to remove other parts of the fish, as well, but the original form of the vendace must remain recognizable. During long winters, the intestines of the fish are completely empty because of the enforced fast and therefore cleaning is not needed.