Precipitated Chalk (50g)

A 50g tub of Precipitated Chalk, used to reduce acidity in wine.

To reduce acidity in wines, the addition of 7g per gallon will lower the acidity by about 1.5 PPT. The liquid will start to foam because gas is given up by the chalk as it neutralizes some of the acid. Obviously this must be done in a vessel from which some of the juice has been removed to allow adequate head space for the foam.