Pitoisia

Pitoisia is a traditional Finnish fermented beverage made from birch sap, a sweet liquid collected from birch trees (*Betula* spp.). The drink has a long history in Finnish culture, dating back to pre-Christian times, and was historically consumed during spring and summer when birch sap was abundant. Pitoisia is often associated with seasonal festivals, particularly the spring festival of *Pitkäpäivä* (Midsummer), though it is enjoyed year-round in some regions.

The preparation of pitoisia involves collecting fresh birch sap, which is then fermented naturally through exposure to air or the addition of yeast. The fermentation process can take several weeks, resulting in a mildly alcoholic drink with a sweet, slightly tangy flavor. Traditional methods relied on wooden barrels or clay vessels, though modern production may use stainless steel tanks for hygiene and consistency. The alcohol content typically ranges from 3% to 6%, though stronger versions can be produced through extended fermentation.

Pitoisia holds cultural significance in Finland, often served at gatherings, celebrations, and family events. It is sometimes compared to other fermented tree sap drinks, such as the Swedish *björnsaft* or the Estonian *koort*, though Finnish versions are distinct in taste and preparation. While historically a homemade beverage, commercial production of pitoisia has grown in recent years, catering to both traditionalists and those seeking a unique Finnish experience.

Today, pitoisia is appreciated not only for its historical roots but also as a symbol of Finland’s connection to nature. It remains a niche but beloved drink, enjoyed by those who appreciate its rustic charm and seasonal tradition.