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
Mulled wine "vin fiert" ("boiled wine"), and it is made using red wine, adding sugar, cinnamon, nutmeg, cloves, anise and orange zest. Everything is boiled and served hot. In Russia, "Глинтвейн" ("Glintwein") is a popular drink during winters and has same recipe as the German Glühwein. Additionally, the traditional Russian winter herbal drink sbiten, although usually a non-alcoholic tisane made with hot water, may also be made with red wine replacing some or all of the water. In Turkey, it is called "Sıcak Şarap" ("hot wine") and can be made using sweet red wine, adding sugar and fruits such as lemon and