Sahti is a traditional beer from Finland made from a variety of grains, malted and unmalted, including barley, rye, wheat, and oats; sometimes bread made from these grains is fermented instead of malt itself. Traditionally the beer is flavored with juniper berries in addition to, or instead of, hops; the mash is filtered through juniper twigs through a trough-shaped tun called a kuurna in Finnish. Sahti has a distinct banana flavor due to the production of isoamyl acetate by the yeast. Sahti is a top-fermented brew (ale), and while baking yeast has been used traditionally, ale yeast may also be used in fermenting.
The end product is a cloudy, mildly alcoholic beer with yeasty and phenolic flavors and a distinct taste similar to banana. Sahti is traditionally homebrewed but in recent years commercial versions have become available. Commercial Sahti usually has around eight percent ABV. Due to its higher percentage of alcohol Sahti is only sold in pubs or state-owned Alko stores. Sahti has to be stored cold until consumption and is therefore not available in all Alko branches.
The etymology of the word sahti is not certain. However, experts believe that a likely root could be the Germanic word saf, which later on evolved into the Scandinavian word saft, meaning juice.
Read more about Sahti: Finnish Sahti, Sahti in Other Countries, Brewing Process, Commercial Sahti Brands