Can A Sous Vide Machine Be Kashered? OU Kosher Staff November 13, 2019 Can you make a sous vide machine kosher if it’s been used for non-kosher? Rabbi Elefant explains the OU’s opinion on this, and how it should be done. Related Articles ASK OU Video Can I Open An Umbrella On Shabbat? ASK OU How Does the OU Certify Flour as Yoshon Throughout the Winter? ASK OU Video Can I Take Down My Sukkah on Sukkot?