What is the origin and context of use of 'bon appetit'?

"Bon appétit" is a French phrase that translates to "good appetite" or "enjoy your meal" in English. It has become widely recognized and adopted in various parts of the world, especially in Western societies where French cuisine and dining customs are esteemed. The phrase is generally used in contexts where people are about to eat, whether at home, in a restaurant, or at a social gathering. It's a polite and friendly way to wish others a pleasant and enjoyable dining experience.