Tannins play three distinctive roles in making wine.
-The first is flavor; tannins increase the zesty flavors that are often left lacking in many home brewed wines. The literal definition of tannin is the “zest” or peel of the grape.
-Tannins aid in the clarification process by neutralizing residual proteins and other proteins, these drop out of suspension by the simple presence of tannins.
-Tannins also aid in the aging and keeping qualities of wines; wines that are deficient do not take advantage of the aging process very well.