The fermented fireweed leaves collected in the village of Koporye, Leningrad region, are blended with lemon balm leaves. The medicinal raw materials of lemon balm contain an essential oil with a strong lemon flavor. The traditional medicine has always been recognized lemon balm to have many medicinal properties. So, for example, infusion of lemon balm (the grass itself and the tips of the stems with flowers) helps with heart diseases treatment. The drink retains a transparent amber color and has a recognizable taste of lemon balm.