close
Advertisement

Here’s Why Popcorn Pops

This is what happens inside that bag of popcorn in your microwave.

Advertisement

The big bang may still befuddle us, but scientists just took a giant leap toward understanding the smaller (and arguably more important) bang that happens in your microwave. Thanks to a team of French researchers, we now have the most complete picture yet of popcorn’s seed-to-snack transition.

Inside every popcorn kernel’s shell, there’s a tiny droplet of water surrounded by a mesh of mostly starch. At 100 degrees Celcius, the water turns into steam and mixes with the starch to create a hot, doughy mass. Pressure builds in the hull until finally, at 180 degrees, it bursts.

In the next 15th of a second, a lightning-fast circus act occurs: A “leg” of fluffy starch emerges from the fractured hull, kicking it up a few centimeters in a gymnast-like spin. Water vapor bursts from the hull as it does when you uncork a champagne bottle, emitting that signature popcorn pop. The hull continues to bloom as it flips and cools, finally converting that hot vapor and starch into the popcorn fluff we know and love.

At the end of the show, each inside-out kernel is about twice as large and one eighth as dense as it was pre-pop. Whether you should cover yours in butter or olive oil is a question for another day.

See it all happen in slow-motion, courtesy of researchers Emmanuel Virot and Alexandre Ponomarenko (video via Haaretz.com):

Popcorn Birth



Advertisement
10 foods you shouldn’t reheat in a microwave

10 foods you should never reheat in a microwave

We already know better than to nuke plastic – or heaven forbid, aluminium foil – but certain foods can become downright toxic when blasted in the microwave. Here’s what you need to know.
10 things you should never touch at all-you-can-eat buffets

10 things you should never touch at all-you-can-eat buffets

Here’s how you can enjoy the experience at tempting buffets while minimising the risk to your health.
5 food safety tips for proper food handling

5 food safety tips for proper food handling

Get up to speed about the proper way to handle food to minimise the risk of food poisoning
The Secret That Makes KFC’s Fried Chicken So Crispy

The Secret That Makes KFC’s Fried Chicken So Crunchy

Not all fried chicken is created equal. Below, KFC's secret recipe to drumstick perfection is revealed.
5 Tips On How To Cut Down On Food Waste

5 Tips On How To Cut Down On Food Waste

We waste 1.3 billion tonnes of food each year. Here's how to do your part to slash those numbers.
Advertisement