Soak Unpopped Popcorn Kernels to Give Them a Second Chance. No matter what method you use to make popcorn, you always seem to end up with a few kernels that didn't pop. Soaking the kernels overnight in water can help them pop the second time around.
Likewise, people ask, what causes a popcorn kernel to pop?
Inside each kernel of popcorn is a tiny droplet of water surrounded by a hard shell called a hull. As the popcorn is heated, the water turns into steam, which builds pressure inside the kernel. When the hull can no longer contain the pressure — POP! — the kernel explodes and a fluffy new piece of popcorn is born.
What causes some popcorn kernels not to pop?
The primary reason is moisture loss. Popcorn pops because it has an impermeable membrane (pericarp) that holds in water. The water inside the kernel superheats, causing so much pressure that the shell bursts. (See What makes corn kernels turn into the shape of popcorn?
Can you pop popcorn underwater?
Can popcorn pop underwater? Popcorn works by heating up the tiny amount of water in the kernel, which then forces open the watertight shell, causing the little explosion of tasty goodness. It takes a minute or so in an air popper to heat the kernel to the point of popping.