Locations Sign In Who We Serve Products Solutions Idea Center Careers Stores Breadcrumb Home Products Kosher Letters of Certification Kosher Letters of Certification As a service, we retain copies of the kosher letters of certification for all of our private brand products that are kosher certified. Please contact Customer Service at (800) 968-4164 or info@gfs.com with questions. To find a letter of certification, enter the reorder number of the product on our Kosher search page by clicking the button below. Search for Kosher Letters of Certification © 2021, Gordon Food Service. All Rights Reserved. Privacy Policy Terms of Use Contact Us FAQ Donations Ordering Select your language English (US) Spanish (US) Ask Gordon Now Welcome to Gordon Food Service, I'm here to help if you need me.