Balling: The name of a density scale for measuring sugar content in water base solutions. Grape juice is primarily sugar and water and the balling scale is used for a quick and easy "sugar analysis" of juice.
The sugar concentration in grapes, must and wine, used to indicate the level of grape ripeness and expressed in degrees. Generally, the degree of grape sugar at the time of harvest is between 21 and 25 balling.
The estimated alcohol that a wine will produce (called potential alcohol) is estimated by multiplying the Brix reading by 0.55. Therefore, a 20° Brix will make a wine with about 11 percent alcohol. The Balling scale was a comparable measurement ...
See also: Rough, Sweet, Temperature, Fruit, Wine