To help us answer we've enlisted Paul Clifton, the Director of Winemaking at Hahn Family Wines. Read on for his answer to this question. Brix is the measurement of the sugar level in grapes.

A measurement of the sugar content of grapes, must and wine, indicating the degree of the grapes' ripeness (meaning sugar level) at harvest. Most table-wine grapes are harvested at between 21 and 25 ...

This scale is based on the density or specific gravity of the must. See also Baumé and Brix. A measurement of the sugar content of grapes, must and wine, indicating the degree of the grapes' ripeness ...