Posted on March 9, 2009March 30, 2019 by Judi Scherrer What is reductive winemaking and what role do lees play? Winemaker Fred Scherrer discusses reductive winemaking and defines lees in response to questions from Jessica Bell of the MidWest Wine School. Post navigationPrevious post: Aging WineNext post: How do winemakers know when to pick their grapes?