Explores the leniency of Yayin Mevushal and its parameters. Also discusses the various reasons in the Rishonim for this leniency and their halachic differences. We will also discuss how these rulings affect the status of Yayin Mevushal in today’s pasteurization process. We also included a special section that discusses the stringency of some communities that avoid drinking wine that was looked upon by a non-Jew.