The Kosher Pig

The "Kosher pig" refers to a pig that is considered kosher under Jewish dietary laws, which prohibit eating pork. To be kosher, an animal must have split hooves and chew its cud; pigs have split hooves but do not chew cud, so they are not kosher. The phrase might be used metaphorically or humorously to highlight something that appears permissible but isn't according to strict rules. Essentially, despite appearances, the pig remains unkosher due to specific biblical criteria.