This ancient Finnish style of home-brewed beer (6.0-8.5% ABV), often brewed with rye, enjoys the rare distinction of being a heritage beer style found mostly in only one country.  Typically it has little or no carbonation, is somewhat turbid and contains few if any hops, meaning that its relatively brief shelf life restricts its availability to its home region.  It varies in colour between yellow and dark brown and includes banana, juniper, rye and clove flavours, due to a combination of yeast effects and being filtered through juniper branches.  Light tartness is acceptable, sourness not.  It is distantly related to some of the other folk beers of the Baltic rim, more obviously Estonian koduõlu.