) Vodka may be distilled from any
starch- or
sugar-rich plant matter; most vodka today is produced from
grains such as
sorghum,
corn,
rye, or
wheat. Some vodkas are made from
potatoes,
molasses,
soybeans,
grapes,
rice,
sugar beets and sometimes even byproducts of oil refining or wood pulp processing. In some Central European countries, such as Poland, some vodka is produced by just fermenting a solution of crystal sugar and yeast. In the
European Union, there are talks about the standardization of vodka, and the
Vodka Belt countries insist that only spirits produced from grains, potato, and sugar beet molasses be allowed to be branded as "vodka", following the traditional methods of production. In the United States, many vodkas are made from 95% pure
grain alcohol produced in large quantities by agricultural-industrial giants
Archer Daniels Midland, Grain Processing Corporation, and Midwest Grain Products (MGP). Bottlers purchase the base spirits in bulk, then filter, dilute, distribute and market the end product under a variety of vodka brand names. Similar methods are used in other regions such as Europe. This pure grain alcohol, also known as
rectified spirit,
neutral spirit, or
ethyl alcohol of agricultural origin, is also available directly to consumers in some areas, as products such as
Everclear, Polmos
spirytus rektyfikowany, and others. In contrast to very high ABV vodkas such as the Bulgarian
Balkan 176° with 88% ABV, these grain alcohol products are not considered vodka; they have not (yet) gone through the filtration and refining process used to produce vodka. A study conducted on
NPR's
Planet Money podcast revealed negligible differences in taste between various brands of vodka, leading to speculation as to how much branding contributes to the concept of "super-premium vodkas".
Distilling and filtering A common property of the vodkas produced in the United States and Europe is the extensive use of filtration before any additional processing including the addition of
flavorants. Filtering is sometimes done in the
still during
distillation, as well as afterward, where the distilled vodka is filtered through
activated charcoal and other media to absorb trace amounts of substances that alter or impart off-flavors to the vodka. However, this is not the case in the traditional vodka-producing nations, so many distillers from these countries prefer to use very accurate distillation but minimal filtering, thus preserving the unique flavors and characteristics of their products. The master distiller is in charge of distilling the vodka and directing its filtration, which includes the removal of the "fore-shots", "heads" and "tails". These components of the distillate contain flavor compounds such as
ethyl acetate and
ethyl lactate (heads) as well as the
fusel oils (tails) that impact the usually desired clean taste of vodka. Through numerous rounds of distillation, or the use of a fractioning still, the taste is modified and clarity is increased. In contrast, the distillery process for liquors such as
whiskey,
rum, and
baijiu allow portions of the "heads" and "tails" to remain, giving them their unique flavors. Repeated distillation of vodka will make its ethanol level much higher than is acceptable to most end users, whether legislation determines strength limits or not. Depending on the distillation method and the technique of the still master, the final filtered and distilled vodka may have as much as 95–96% ethanol. For this reason, most vodka is diluted with water before bottling.
Flavoring , Poland, where the bison grass vodka "
Żubrówka" is produced While most vodkas are unflavored, many flavored vodkas have been produced in traditional vodka-drinking areas, often as home-made recipes to improve vodka's taste or for medicinal purposes. Flavorings include red pepper, ginger, fruit flavors, vanilla, chocolate (without sweetener), and cinnamon. In Russia, vodka flavored with honey and pepper,
pertsovka in Russian, is also very popular. In Poland and Belarus, the leaves of the local
bison grass are added to produce
żubrówka (Polish) and
zubrovka (Belarusian) vodka, with slightly sweet flavors and light amber colors. In Lithuania and Poland, a famous vodka containing honey is called
krupnik. This tradition of flavoring is also prevalent in the
Nordic countries, where vodka seasoned with herbs, fruits, and spices is the appropriate strong drink for several seasonal festivities. Sweden has forty-odd common varieties of herb-flavored vodka (
kryddat brännvin). In Poland and Ukraine, a separate category ( in Ukraine and
nalewka in Poland) is used for vodka-based spirits with fruit, root, flower, or herb extracts, which are often home-made or produced by small commercial distilleries. Their alcohol contents vary between 15 and 75%. In
Estonia, vodkas are available with barberry, blackcurrant, cherry, green apple, lemon, vanilla, and watermelon flavors. In most cases, vodka flavoring comes from a post-distillation infusion of flavors. Through the fermentation process, grain mash is transformed into a neutral alcohol beverage that is unflavored. The process of flavoring vodka so that it tastes like fruits, chocolate, and other foods occurs only after fermentation and distillation. Various chemicals that reproduce the flavor profiles of foods are added into vodka to give it a specific taste. ==Today==