Would you like your noodles plain . . . or on a plane?

Frequent flyers on Korean Air’s planes love slurping instant noodles in the air. But bumpy flights have knocked hot noodles right off the menu.

Starting August 15, folks riding in the economy-class part of the plane will no longer get cups of Shin Ramyun. Shin Ramyun is a popular brand of instant noodles in South Korea. You can probably find them in a store near you too. The noodles sometimes cost less than $1 per pack.

The airplane noodle decision is all about safety. No noodles means less danger of food burning passengers when planes hit turbulence. Turbulence is an unsteady movement of air. When a plane hits turbulence, it goes bump, bump, bump. This can feel scary for a moment—but it’s a normal part of flying. It gets more troublesome when hot water starts spilling on people’s laps.

Snacks such as sandwiches, corn dogs, and hot pockets will replace the noodles.

Trouble with hot airplane food is hardly new. Over the years, passengers have sued airlines for scalding spills. Customers got burned when hot coffee sploshed onto them during flights. Some airlines pause snack service when a plane hits rough air.

Noodles are cheap. Upgrading to first class is not. But if flyers want noodles, that’s what they’ll have to do. Business and first-class passengers will still get their noodles. Flight attendants bring the noodle snacks to these passengers individually. That means there’s less risk of spills.