- to add sulphur
Sulphur is used in the most modern types of vinification and is usually found in liquid form and added to the wine from a pressurised bottles. Sulphur can also be used in winemaking from its solid form (e.g. sulphur sticks) or as a gas or powder. If sulphur is not added to a wine, or if the wine is not sulphurized, then it would rapidly oxidise and become unpleasant to drink very quickly. Red wines generally require less sulphur compared with white or sweet wines, because their natural preservative is found in the tannins.