KVH vs OU Kosher Certification: What's the Difference?

KVH Kosher is the certification arm of the Rabbinical Council of New England, originally founded in 1928 as the Orthodox Rabbis Association of Massachusetts and based in Boston. The OU (Orthodox Union) is the world's largest kosher certification agency, headquartered in New York. The practical difference is territory: KVH is New England's community certifier, while the OU operates across more than 100 countries.

Side-by-side comparison

KVH in brief

KVH stands for Kashrus Vaad Harabonim. It is one of the older kosher certifying organizations in the country, with roots going back to 1928, and it operates as the kashrus division of the Rabbinical Council of New England. From Boston it supervises restaurants, caterers, and food-service operations across the region, and it also certifies manufacturing facilities, including clients outside New England.

If you eat kosher in Boston or the surrounding towns, KVH is the hechsher you will see most. That is the standard arrangement in American kashrus: the local vaad supervises local dining, because its rabbis and mashgichim are on the ground.

Browse KVH-certified restaurants on Kosher Connect.

The OU in brief

The Orthodox Union's kosher division has run since 1923 and certifies more than 1 million products worldwide, making the circled U the most familiar symbol on packaged food. It also certifies restaurants and caterers, though local supervision in most American cities belongs to regional councils like KVH.

Letter designations mark the category: OU-D for dairy, OU-M for meat, OU-F for fish, OU-P for Passover, plain OU for pareve.

Browse OU-certified restaurants on Kosher Connect.

Regional vaad, national agency

The two kinds of organization do different jobs, and neither replaces the other.

A packaged product needs a certification that travels with it to every shelf in the country. That is the national agencies' work. A restaurant needs frequent, sometimes daily, on-site supervision. That is the local vaad's work. Boston's kosher restaurants carry KVH for the same reason Chicago's carry cRc and Baltimore's carry Star-K: the community organization is there.

So the question is rarely "KVH or OU." A KVH-certified restaurant is likely cooking with OU, OK, and Star-K certified ingredients, all under KVH supervision.

Frequently asked questions

Is KVH a reliable certification? KVH is the long-standing communal kashrus organization of New England, operating for nearly a century. Travelers who follow a specific list of accepted agencies should consult their own halachic authority, as with any regional hechsher. Does KVH certify packaged products or just restaurants? Both. Alongside its New England food-service work, KVH certifies manufacturing facilities, including some outside the region. Why don't Boston restaurants just get OU certification? Local supervision is the local vaad's role. The OU concentrates on products and larger food-service operations, and communities rely on their own councils for neighborhood dining. I'm visiting Boston. How do I check a restaurant's certification? Every Kosher Connect listing shows the certifying agency, and the certificate is posted in the restaurant. Start with kosher restaurants in Boston.

Finding certified restaurants

Browse KVH-certified and OU-certified restaurants on Kosher Connect, look up Boston, or open the explore page to see what's near you.

Related reading: OU vs OK kosher certification and how to find kosher food while traveling.

---

Sources & references

• KVH Kosher: About - The agency's official page on its 1928 founding, structure, and scope
• OU Kosher: About Us - Official overview of the Orthodox Union's certification program
• Kosher Connect certification directory - Agency profiles and certified restaurant listings