Wiktionary
kosher salt
n. A variety of edible salt with a large grain size and usually no additives.
Wikipedia
Kosher salt
Koshering salt, usually referred to as kosher salt in the US, is a variety of edible salt with a much larger grain size than some common table salt. Like common table salt, kosher salt consists mainly of the chemical compound sodium chloride.
Unlike some common table salt, kosher salt typically contains no added iodine. Some brands will include anticaking agents in small amounts.
Usage examples of "kosher salt".
But the main ingredients, say for a hundred pounds of meat, would be eight pounds of kosher salt and two pounds of brown sugar.
In the studio he unpacked his shopping bags, new bias seam-binding, panels of stretchy Lycra to go under the plackets, a box of kosher salt.