Publications

Cholov Yisroel: Unraveling The Mysteries – Part I

by Rabbi Avrohom Gordimer, RC Dairy “There is no purpose in drinking cholov yisroel today, as the government inspects the dairies and makes sure that all the milk is kosher.”…

Daf Haskashrus Shavuos 5775 – Consumer Edition

Cholov Yisroel: Unraveling The Mysteries – Part I, by Rabbi Avrohom Gordimer, RC Dairy The How’s and ‘Wise’ of Mevushal – Part II, by Rabbi Nachum Rabinowitz, Senior Rabbinic Coordinator

OU KOSHER’S MAN IN THE CONTROL TOWER

Meet Rabbi Michael Morris If you want to know where any of the 500 OU Kosher RFRs (rabbinic field representatives) are at any given time on any given day and how…

KISLEV 5775/DECEMBER 2015

• Daf Notes: Responses to out readers on: HPP (high pressured processing),  Zeiya and Kashering Pipelines. • Lo Basi Ela L’Orer: Rov Tashmisho • Kashrus Alert… • Mazel Tovs • Condolences…

Lo Basi Ela L’Orer: ROV TASHMISHO

SHULCHAN Aruch (O.C. 451:6) says that one need only kasher a utensil according to the majority of the way it is used (rov tashmisho). Therefore, a bowl which is ordinarily…

Spring 2015

Our Daily Bread: More Than The Sum of Its Calories The President’s Rabbi Ingredients: Protect Your Company How OU Kosher Certifies Fish Products The OU Visit: Being Prepared, Hosting It, &…

DAF HAKASHRUS CHANUKKAH 5775 – CONSUMER EDITION

Olive Oil by Rabbi Akiva Tendler Playing with Fire – Part III

Playing with Fire – Part III

by Rabbi Yaakov Luban, Executive Rabbinic Coordinator, OU Kosher  NOT SERVED AT A ROYAL TABLE Food that is not fit to be served at a royal dinner[1] may be prepared by…

CHaNaN Lach B’Lach

by Rabbi Eli Gersten The Mordechai (Chulin 697) writes that we do not say Chaticha na’ases neveila regarding sha’rissurim lach b’lach. Only when a chaticha (solid) absorbs issur, do we…

Kashering Pipes Properly

by Rabbi Simcha Smolensky, Senior RFR I’ve thought many times about the fluid dynamic physics of product (i.e., oil, chocolate, anything liquid) as well as water (as is used for…