Vinolust Online Classes Intermediate Wine Tasting: Acidity in Wine As one of the most important basics of wine structure, acidity in wine can speak to varietal, climate and winemaking. Hey there! Some exciting wine information stuff inside. To access you just need a Vinolust Wine Lover Membership or Vinolust Wine Explorer Membership. Join now! Already a Vinolust member? Then you just need to log in to get your wine fix in.