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OU Kosher

OU (Orthodox Union) Kosher is the world’s largest and most widely recognized international kosher-certification agency, certifying over 1,000,000 products produced in more than 13,000 plants located in 106 countries around the world. The agency certifies two-thirds of all kosher-certified foods in the United States. See: oukosher.com.
OU Kosher conference
The Wire
200 industry professionals unite at OU kosher conference
Annual event focused on innovation and global kashrut issues and included leaders for leading international kashrut agencies.
Jul. 8, 2025
OU Kosher seminar participants
The Wire
OU Kosher program explores daily applications of kashrut
The advanced summer seminars in kashrut taught by world-class industry leaders.
Sep. 11, 2024
Attending the OU Kosher Kashrus Conference are (from left) OU Kosher chairman Dr. Joshua Penn; OU Kosher vice chairman Rabbi Yosi Heber; OU Kosher COO Rabbi Moshe Elefant; OU Kosher CEO Rabbi Menachem Genack; and OU president Mitchel Aeder. Credit: Courtesy.
The Wire
OU Kosher Conference marks 30 years of unifying ‘mashgichim’ worldwide
Event drew over 170 participants including representatives of prominent kashrut agencies.
Jun. 27, 2024
OU Kosher Pesach training
The Wire
OU Kosher marks another successful Pesach season educating thousands
Reflecting on its busiest period, world’s largest kosher certification agency is inspired by consumers’ eagerness to learn.
Jun. 6, 2024
A STAMP-certified expert checks the text of a tefillin. Credit: Courtesy of the Orthodox Union.
The Wire
OU Kosher initiative will oversee kashrut of mezuzahs
In a market lacking transparency, OU Kosher will partner with Israel-based nonprofit to improve mezuzah industry’s kashrut.
Apr. 3, 2024
New kosher-for-Passover pastry dough and foods on display at the annual Kosherfest trade show in November 2022. Photo by Faygie Holt.
The Wire
OU Kosher CEO Rabbi Menachem Genack builds bridges with Israeli leaders
“Israel is the largest kosher consumer worldwide with [the Israel Defense Forces] being the largest single consumer of kosher food in the country.”
Aug. 10, 2023
Left to right: Rabbi Shmuel Rabinowitch, Rabbi of the Western Wall and the Holy Sites of Israel; Rabbi Mordechai Gross; OU Kosher CEO and Rabbinic Administrator Rabbi Menachem Genack; and OU Kosher COO and Executive Rabbinic Coordinator Rabbi Moshe Elefant at OU Kosher’s conference in Jerusalem
The Wire
OU Kosher hosts conference to show appreciation for mashgichim in Israel
Israel’s prominent rabbis, OU Kosher CEO and COO thank mashgichim with luncheon.
Jan. 23, 2023
The Wire
GE Appliances (GEA) completes transition of refrigerators to OU Kosher/CRC Hisachdus certification
Top-freezer refrigerators will now be certified with built-in enhanced Shabbos mode through collaboration between kosher certifying agencies and Zman Technologies.
Jan. 19, 2023
Participants from 23 countries joined the virtual event which focused on bedikas tolaim (checking for insect infestation) with real time closeup video of bugs on vegetables, as well as other topics
The Wire
1,100 Participate in the Inauguration of OU Kosher’s Community Relations Department
Participants joined from Australia, Austria, Belgium, Brazil, Canada, Finland, Germany, Gibraltar, India, Israel, Italy, Laos, Mexico, Netherlands, Panama, Peru, Philippines, St. Barts, South Africa, Serbia, Switzerland, United Kingdom and the United States.
Sep. 3, 2020
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