Reviews · Oak Knoll District 2015 Trefethen Dry Riesling Tasted 6 May 2017 Napa Valley · Oak Knoll District It was simple. It was fine. It served its purpose with some extraordinary fare from Madrona Manor in Healdsburg. Light bodied and fairly crisp. Nothing to object to. Nothing to be drawn to.Read the full note 0 Like this note Share ProducerTrefethen WineAll vintages RegionNapa Valley · Oak Knoll District GrapesRiesling Record2015 Trefethen Dry Riesling Discussion for members