Russian cuisine results in a beverage with very low alcohol content. Commercial kvass is often around 0.5% alcohol. The fermented liquid, referred to as "zator," is diluted with water and mixed with yeast, sugar, and aromatic additives. This final mixture is allowed to brew for several days. Flavor additives may include fruit and berry juices (cherry, raspberry, lemon, etc.), as well as ginger and mint. Sbiten, another non-alcoholic drink, is made of honey, water, fruit juices, and spices. Sbiten was once the most popular non-alcoholic beverage in the country, but in the last few centuries it has been superseded and largely replaced
Alcoholic drink which contains a very high level of alcohol and "does not contain any added flavoring" is commonly called a neutral spirit. Generally, any distilled alcoholic beverage of 170 US proof or higher is considered to be a neutral spirit. Most yeasts cannot reproduce when the concentration of alcohol is higher than about 18%, so that is the practical limit for the strength of fermented drinks such as wine, beer, and sake. However, some strains of yeast have been developed that can reproduce in solutions of up to 25% ABV. Shot sizes vary significantly from country to country. In the United