Hechsher
rabbinical product certification for items (foods etc.) that conform to halakha
A hechsher (Hebrew: הֶכְשֵׁר "prior approval"; plural: hechsherim) is a symbol placed on food bought at a grocery store that is considered kosher by a professional kosher checker.
![](http://up.wiki.x.io/wikipedia/commons/thumb/0/02/Hechsher_Yechiel_Babad_Orthodox_Union_Passover.jpg/150px-Hechsher_Yechiel_Babad_Orthodox_Union_Passover.jpg)
There are multiple hechschers given by different companies. One popular company is the OU, which has a symbol of a "U" with a surrounding circle. Another popular company is the OK, which has a symbol of a "K" with a surrounding circle.