Vinolust Online Classes Intermediate Wine Tasting: Tannins in Wine Tannins are a telling structural element found in red wines that can reveal volumes about varietals. 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.