Kosher certification agency

A kosher certification agency is an organization or certifying authority that grants a hechsher (Hebrew: הכשר, "seal of approval") to ingredients, packaged foods, beverages, and certain materials, as well as food-service providers and facilities in which kosher food is prepared or served. This certification verifies that the ingredients, production process including all machinery, and/or food-service process complies with the standards of kashrut (Jewish dietary law) as stipulated in the Shulchan Arukh, the benchmark of religious Jewish law.

Source: Wikipedia — Kosher certification agency (CC BY-SA 4.0)