White wine . At auction each bottle made $275,000 making them the most expensive bottles of white wine ever sold. White wine White wine is a wine that is fermented without skin contact. The colour can be straw-yellow, yellow-green, or yellow-gold. It is produced by the alcoholic fermentation of the non-coloured pulp of grapes, which may have a skin of any colour. White wine has existed for at least 2500 years. The wide variety of white wines comes from the large number of varieties, methods of winemaking, and ratios of residual sugar. White wine is mainly from "white" grapes, which are green
White wine salts with the tartaric acid: Potassium bitartrate and the neutral calcium tartrate at the pH of the wine. For these, when their solubility threshold is reached, they settle and contribute to de-acidify the wort. In the southern regions where acidity is sometimes a little lacking this may be a cause of failure of extra acidity. White wine is made from white or black grapes (but always with white flesh, the grapes with coloured flesh are called "Teinturier" meaning coloured juice). Once harvested, the grapes are pressed and only the juice is extracted which is called wort. The wort is put