Sulphites is an inclusive term for sulfur dioxide (SO2). SO2 is a preservative used in wine making because of its antioxidant and antibacterial properties. SO2 plays a very important role in preventing oxidization and maintaining a wine’s freshness when stored in Bottles, Bag n Box or Keykegs (plastic Kegs)
The objective is to prevent wine going off before it can be sold. So this additive changes the way the wine tastes and is not the ideal way of keeping wine fresh before the consumer tastes it.
Stainless Steel Kegs have been used for half a century by Vineyards to keep their wines fresh before bottling. So if we use Stainless Steel kegs instead of Stainless Steel Vats then the wine will not change its freshness as oxygen can not perforate. Preventing oxidization and maintaining its freshness. Doing what the Sulphites do, but much better and with fewer additives.
So next time you see wine on tap from Steel Kegs you will get a fresher glass of wine and will be enjoying it just as the Vineyards intended their wines to be.