The surprising science behind Virgin Australia's new inflight menu

If an inflight meal has ever tasted like a dry sponge, the fault likely lies with physics rather than the chef.

At 30,000 feet, the aircraft cabin is a sensory desert. The air is dry, the pressure numbs taste buds, and the constant hum of the engines is believed to suppress the perception of sweetness and delicate aromas.

These conditions may dull taste by up to 30 per cent. Deakin University lecturer in food and sensory sciences Russell Keast said taste shifts so dramatically in the air that subtle flavours become "invisible".

This poses a unique challenge to chefs developing inflight menus. But Virgin Australia's latest menu item, the cheeseburger toastie, is backed by a surprising amount of sensory science.

The cheeseburger toastie was designed to make an impression on the tastebuds, with "umami, salt, acid, fat, heat, crunch, aroma and familiarity in one compact format", Professor Keast said.

He said the inflight snack was "a strong sensory vehicle because it layers multiple interesting sensory cues".

The $14 toastie, inspired by a viral TikTok recipe, contains ground beef, melted cheese, ketchup, mustard, a pickle and is finished with a cheesy sauce.

Each of these elements contribute to the sensory experience, Professor Keast said.

Beef and cheese provide a hit of umami, salt and fat, while pickles, mustard and ketchup bring acidity, he said.

The food and sensory science professor said the warmth of the toastie increased aroma release and comfort.

"Consumers know what a cheeseburger should taste like, so expectation helps fill in the sensory experience," Professor Keast said.

"A good way to think about it is that food in flight has to overcome increased sensory thresholds and reduced flavour salience," he said.

The toastie leads a high-flavour overhaul of Virgin Australia's Economy buy-on-board menu, which also includes corn chips with zesty salsa and the canned alcoholic beverage Hard Rated Lemon.

Virgin Australia general manager of product and customer strategy Ali Dunn said the airline designed new menus "to deliver bold, flavour-packed options that we know our guests will love".

But the humble ham and cheese toastie was expected to remain the firm favourite on the Economy menu, with more than 250,000 sandwiches sold in 2025.

In Business Class, the airline was also leaning into bold flavours to combat the 30 per cent reduction in taste experienced at altitude.

The Business Class menu, taking flight on May 27, features dishes such as beef with mustard jus, and Mexican-style chicken parmigiana.

In an environment that dulls sensory experiences, Virgin Australia is betting on the combination of salt, fat, acid, and umami to ensure flavour survives the flight.