Orthodox Union (OU) Kosher Certification
Issued by Union of Orthodox Jewish Congregations of America (OU)
CertificationAudit Scope
Reviews ingredients, equipment, and production processes for compliance with Orthodox Jewish dietary law (kashrut). Includes ingredient kosher status, equipment shared-use protocols, and Sabbath/holiday production rules.
What It Proves
A product, facility, or ingredient has been certified by OU as meeting Orthodox Union kashrut standards. OU is the largest and most widely-recognized kosher certifier globally.
What It Does Not Prove
OU kosher does NOT certify GMP, food safety, allergen control, or organic claims. Kosher symbols (OU, OU-D for dairy, OU-P for Passover) indicate religious-dietary compliance only. Confused with food-safety certification by some buyers — it is NOT a food-safety scheme.
How Vendors Report It
You may see this listed as:
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