By Evan Dawson, Finger Lakes Correspondent After the recent discussion regarding the effects of filtration on wine, I contacted wine importer Neal Rosenthal for his thoughts. Over the past three decades Rosenthal has been a leading voice calling for unfiltered wines. In his book Reflections of a Wine Merchant, Rosenthal writes often about how he routinely asked winemakers to stop filtering wines. He also wrote a brief defense of Brettanomyces, but he did not connect Brett and filtration in his book. I appreciate his response, and I learned a bit about the evolution of filtration. I'd love to hear from…