A hechsher is a rabbinical product certification, qualifying items that conform to the requirements of halakha.

What is the meaning of a Hechsher?

: a rabbinical endorsement or certification especially of food products that conform with traditional Jewish dietary laws — compare kashruth.

What does kosher mean literally?

The laws that govern kosher food deal with what foods may be eaten and how those foods must be prepared. The Hebrew word Kasher (kosher) literally means fit or proper and these laws are Biblical in origin – the Jewish People have applied them to their daily diet for millennia.