Kosher certification for food, beverage, ingredient and supplement brands A real person replies within one business day. info@purek.org

Guide

What Is a Letter of Certification (LOC)?

A Letter of Certification is the official proof your products are kosher-certified. Why your B2B customers ask for it and how to get one.

A Letter of Certification (LOC) is the official document confirming your products are kosher-certified — listing exactly which items are covered and through what date.

Why it matters

It’s what your own customers — especially other manufacturers who use your product as an ingredient — will ask for as proof of kosher status. Without a current LOC, your kosher claim is hard to verify.

How to get one

Once your products are certified, we issue your LOC and keep it current at renewal. Get a free quote.

Ready to get certified?

Start with a free, no-obligation quote. You’ll know exactly what’s involved, how long it takes, and what it costs.

Get certified

  • Free, with no obligation
  • A real person replies within one business day
  • Clear on timeline and cost up front
  • Your formulations stay confidential