Consumer Kosher

May Non-Pesach Certified Milk Be Used If Bottled Before Pesach?

April 11, 2016

Chametz before Pesach is like any other issur in that it can be batel b’shishim. However, if pirurim (crumbs) of chametz b’en might remain in the food, even if those crumbs are batel chad b’trei, the chametz on Pesach will bechozer v’niyur. However, Rema (O.C. 447:4) writes that if the chametz is lach b’lach (either…

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Aged Cheese List

April 1, 2016

Here are some common cheeses and the lengths of time for which they are aged:

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A Work In Progress: Roe, Roe, Roe Your Fish

March 28, 2016
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OU KOSHER Experts Answer Top Purim Questions For 2016

March 16, 2016

OU Kosher presents the most frequently asked questions to-date on the OU Kosher Hotline (212-613-8241) by consumers. Questions may be submitted to as well. The Purim questions were answered by Rabbi Eli Gersten, rabbinic coordinator and halachic recorder for OU Kosher. The responses were reviewed by Rabbi Yaakov Luban, OU Kosher executive rabbinic coordinator. Rabbi Moshe Zywica, OU Kosher executive…

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HaRav Chaim Yisroel HaLevi Belsky, Zatsal: Recorded, Remembered, and Reflected Upon

March 9, 2016

For just shy of 16 years, I had the immeasurable Zechus to interact with Maran HaGaon HaRav Chaim Yisroel HaLevi Belsky, Zatzal, in his capacity as a Senior Poseik with the Kashrus Division of the Orthodox Union (“the OU”), in which I serve as a Rabbinic Coordinator. I would like to share here some of…

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Kosher Brings Out the Best at Winter Fancy Food Show 2016

March 3, 2016

For the past 25 years I’ve been coming to San Francisco every year to attend the Winter Fancy Food show. I admit, getting out of the New York winter every January is certainly a bonus, but attending this growing event is much more than a foodie’s dream, it’s a reunion of the important players in…

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An Eruv Tavshilin Primer

March 1, 2016

by Rabbi Moshe Zywica, Executive Rabbinic Coordinator This year, the second days of the Pesach holiday afford us the opportunity to perform the rabbinic procedure of eruv tavshilin on Thursday, April 28, before the start of yom tov. What is Eruv Tavshilin? When the second day of a holiday falls on Shabbat, as it does this year,…

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A Giant in Our Midst: The Legacy of Rav Chaim Yisroel Belsky zt”l at the OU

February 11, 2016

Last week, the OU suffered an enormous loss with the passing of Moreinu Virabeinu, Harav Hagaon, Rav Chaim Yisroel  Belsky zt”l, who provided halachic and spiritual guidance to the OU Kashrus Department for more than 28 years. The OU was not the only organization to experience an enormous loss. Rabbi Belsky had an amazing array of talents and…

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Rabbi Belsky Remembered

February 2, 2016

I was not a talmid of Rabbi Belsky in Yeshiva Torah Vodaath or in Camp Agudah as I did not attend either. My association with Rabbi Belsky was in the OU where I had the great zechus of interacting with him on kashruth matters, so my recollections of him are mostly anecdotal. Rabbi Yisroel Belsky…

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What Could Be Wrong With… Fish?

January 24, 2016

One of the most serious misimpressions that persists in the minds of kosher consumers is the belief that one can eat inherently kosher foods prepared in non-kosher restaurants. Professionals are often under great pressure to go out with clients or colleagues to lunch and dinner. When kosher restaurants are not available, people rationalize that they…

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