Who is Rabbi?
Each agency usually has a certifying rabbi who determines the exact Kosher standards to be applied and oversees their implementation. In the context of Kosher food Rabbi is a Jew who supervises the Kosher status of a Kosher establishment. Rabbi usually works as an expert for the requirement of Kosher certification. Rabbi can give the advice for all the necessity of Kosher certificate. If you go by history then Rabbi is a Hebrew word which refers teacher or master In Judaism. Rabbi is a person qualified by academic studies of the Hebrew Bible and act as religious teacher of a Jewish community.