The specific alcohol content will always vary between each batch of wine, or any alcoholic beverage that is produced, due to the number of variables, such as the amount of act
…ive yeast available, the strain of yeast, the amount of sugar available, the ambient temperature, pressure and humidity, and the presence (or lack thereof) of other sugar-loving micro organisms such as bacteria. However due to the need for regulating the % alcohol by volume, Merlot generally falls somewhere between 12-13%, with some bottles of wine reaching as high as 15%. (MORE)