Winexpert kits are very easy to use and make very high quality wine. There is no sugar to add and each kit is acid balanced so no additives are needed. Simply pour into carboy and add water and yeast! The 5.8 liter Vintner's reserve kits yield 5.5 to 6 gallons. The 15 liter Selection kits also yield 5.5 to 6 gallons, but uses a juice that has been concentrated to a lesser degree than the Vintner's Reserve kits so more of the true flavor of the variety comes through.