What is Star-K?
Also spelled / known as: Star K Kosher, Star-K certification, Baltimore kosher
In brief
Star-K Kosher Certification is a major international kosher agency based in Baltimore, Maryland, known for rigorous standards, extensive rabbinic supervision, and pioneering work on Shabbat-compliant appliances.
Star-K explained
Star-K Kosher Certification was established in Baltimore and is one of the 'Big Four' kosher certifying agencies. The Star-K symbol, a five-pointed star with a K inside, appears on tens of thousands of products and services worldwide. Star-K is particularly respected for its technical expertise in industrial kosher supervision and for certifying appliances as Shabbat-compliant.
Real-world examples
A five-pointed star with the letter 'K' inside on product packaging
Many Baltimore kosher restaurants operate under Star-K supervision
Star-K certifies Shabbat mode settings on ovens, dishwashers, and refrigerators
Widely used by international food manufacturers
Context & nuance
Star-K is headquartered in Baltimore, Maryland, and led for many years by Rabbi Moshe Heinemann. It is particularly known for its engineering-minded approach to kosher supervision and has been a pioneer in certifying modern appliances for Shabbat and Yom Tov use. In Baltimore's Pikesville and Park Heights neighborhoods, nearly every kosher establishment carries Star-K supervision.
Frequently asked questions
- Where is Star-K based?
- Star-K Kosher Certification is headquartered in Baltimore, Maryland. The agency supervises the majority of kosher establishments in the Baltimore Jewish community and certifies products and services worldwide.
- Is Star-K accepted by all Orthodox Jews?
- Yes. Star-K is one of the 'Big Four' kosher certifying agencies and is universally accepted in Orthodox Jewish communities alongside OU, OK, and Kof-K.
- What is Star-K known for besides food?
- Star-K is renowned for its work certifying appliances (especially ovens, refrigerators, and dishwashers) as compliant with Shabbat and Yom Tov use. The Star-K website lists hundreds of 'Shabbat Mode' appliances.
Cities where Star-K matters most
Find verified kosher listings in these communities where star-k is especially relevant.
Where Star-K shows up
These business categories are where you'll encounter star-k most often.
Related terms
Hechsher
A hechsher is the symbol printed on a kosher product or displayed by a kosher establishment indicating which rabbinic agency has certified it as meeting kosher standards.
OU Kosher
OU Kosher is the certification from the Orthodox Union, the largest kosher certifying agency in the world, supervising over 1,000,000 products from 10,000+ companies in 100+ countries.
OK Kosher
OK Kosher Certification is one of the 'Big Four' kosher certifying agencies in the United States, founded in 1935 and known for its global reach across 100+ countries.
Kof-K
Kof-K Kosher Supervision is one of the 'Big Four' US kosher certifying agencies, based in Teaneck, New Jersey, and known for its global reach and rigorous standards.
Mashgiach
A mashgiach is a trained kosher supervisor who ensures that a restaurant, bakery, factory, or catering operation maintains kosher standards: checking ingredients, overseeing food preparation, and verifying every step of the process.
Maintained by the Kosher Connect editorial team · Updated
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