How do you make white wine from red grapes?
It is possible to make white wine from red grapes because the juice of grapes does not contain color pigments– it is clear. Color pigments reside within the skins, which are called anthocyanins. The color in wine is extracted from the skin once the grapes are crushed and fermented.
When the grapes are allowed to ferment with the skin, the skin breaks down, and the pigments are released and dispersed in the wine to yield a red color. If you do not ferment the juice with skins and extract it immediately after pressing, there will be no color – thus producing a white wine from red grapes.