Knowledge Base

Answers and Guides

Why OU Kosher Is Considered a Trusted Kosher Certification

OU Kosher is widely trusted because the Orthodox Union has certified kosher products since 1923 and now oversees more than 1.3 mi…

How to Check If a Product Is OU Kosher Certified

The fastest way to check whether a product carries OU Kosher certification is to use the Product Search tool on oukosher.org, or …

How Does a Company Apply for OU Kosher Certification?

A company applies for OU Kosher certification by submitting an application through the OU Kosher website or by calling the Applic…

What Does It Mean for a Product to Be Kosher Certified by OU?

A product that is OU kosher certified has been reviewed and supervised by the Orthodox Union (OU), one of the most widely recogni…

What Is OU Kosher and What Does the Orthodox Union Do?

OU Kosher is the kosher certification division of the Orthodox Union, a U.S.-based organization that has supervised kosher produc…