Reply To: How Do I Kasher A Microwave? Home › Forums › Bais Medrash › How Do I Kasher A Microwave? › Reply To: How Do I Kasher A Microwave? December 6, 2010 5:26 am at 5:26 am #716403 2morecentsParticipant wait at least 24 hours after cleaning it out before the 5-10 minutes of microwaving the cup of water.
