Kashering a Microwave that was used to Heat Non-Kosher Food

How can a microwave be kashered after it was used to heat non-kosher food?

The microwave oven should be cleaned well and left idle for 24 hours. Then a full cup of water should be heated in the microwave for ten minutes allowing the water to overflow and the microwave to fill with steam. The cup should then be moved to another location in the microwave and again the water should be boiled for ten minutes. If the non-kosher food has been placed directly on the glass turntable, the glass plate should be replaced or double wrapped in plastic wrap.

The Gerald & Karin Feldhamer OU Kosher Halacha Yomis is dedicated to the memory of Rav Yisroel Belsky, zt”l, who served as halachic consultant for OU Kosher for more than 28 years; many of the responses in Halacha Yomis are based on the rulings of Rabbi Belsky. Subscribe to the Halacha Yomis daily email here.