If a waiter tells the kitchen they need an order "on the fly," what exactly are they asking for?

In the culinary world, "on the fly" is a phrase used to indicate an order that needs to be made right away. This could be caused by a multitude of reasons, including a server error, the timeframe of the guest, or a previously inedible dish.

Asked by Rachel Bortles · Last updated 5 years ago · 1.8M views · SOURCE