Kof-K, a Teaneck, New Jersey–based Kosher certification agency, [1] is one of the "Big Five" [2] kosher certification agencies in the United States.
As of 2010, more than one third of all food sold in the United States has kosher supervision, [3] 80% of it from one of the "Big Five." [2] [4]
(placed on certified products)
Its founder and rabbinic administrator was Rabbi Dr. Harvey (Zecharia) Senter, who died April 4, 2021 (אחרון של פסח). [5] [6] [7] [8] [9]
While the Kof-K's certification is largely for products, they also certify kosher eateries. [10]