OU Kosher

OU Kosher, operated by the Orthodox Union since 1898, is the largest kosher certification agency in the world. Established in 1924, it introduced standardized practices for kosher supervision, marked by the iconic “OU” symbol that first appeared on Heinz products in 1925. This symbol is now recognized globally as a trusted mark of kosher certification. The organization provides kosher certification services to food manufacturers, ensuring compliance with Jewish dietary laws. It employs kosher supervisors and Rabbinic Field Representatives to inspect facilities and production processes. OU Kosher certifies a wide range of products across various industries, emphasizing ethical standards and professional integrity. With a history of partnerships with notable brands like Heinz, Manischewitz, and Empire Kosher, OU Kosher has certified thousands of items, serving both artisanal producers and large corporations. The agency continues to lead in the kosher certification field, adapting to modern needs while maintaining its commitment to quality and reliability.