Say I visit a bakery, restaurant, jail, hospital, or nursing home. And say I already know that the food there is kosher. Must I still check the kashrut certificate every time I visit?

(Gershon Gold, thank you for inspiring this question.)


4 Answers 4


Generally (at least here in Israel) they have it on display so generally I would think just noticing that it is still there and not expired should be OK.

EDIT: In many towns in Israel the certificates change color every quarter, so you can often tell if it is up to date just by the fact that it is the correct color


Every certificate I have ever seen has a date on it. You only need to check the teudah Kashrut(Kosher certificate) once per date range.

  • Do you have a source? I think it would be reasonable to argue that either the assumption that the food is permissible generally applies, regardless of how far into the date range you are, or that the assumption never holds so you need to check on each visit.
    – WAF
    Commented Aug 14, 2014 at 13:14

You should check that the Kashrus certificate is available and not expired, each time you go.

Many of the kashrus agencies now have signature stamps AND holographic stickers on them to ensure that it's not a photocopy.

For example, see information about Badatz Beit Yosef with a picture of one of their teudot kashrut.


The certificate can be revoked without your knowledge at any time, so I would say you should check it each time, and make sure the the dates is still good.

  • If it's revoked, can't the restaurant still have a photocopy of the old one posted? How does it help to check?
    – msh210
    Commented Jan 6, 2013 at 6:32
  • Theoretically I suppose they can, but legally they cannot.
    – andrewmh20
    Commented Jan 6, 2013 at 19:30
  • @andrewmh20: +1. Still, I'm curious. What law says they cannot post a photocopy of the revoked certificate? Commented Jan 14, 2013 at 1:20
  • As far as I am aware, the kashrut companies always own the certificate, and are licensing it to be posted in an establishment they approve of, with the condition that it must be removed if the kashrut company says so.
    – andrewmh20
    Commented Jan 15, 2013 at 0:26

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