... popcorn pops?
Popcorn, a variety of Indian corn called Zea mays everta, is different from
ordinary corn in that it has a harder outer shell. As the corn is heated, moisture in its starchy grains is
converted to steam, causing a tremendous pressure to be exerted against the shell. The tough shell
stands up under the pressure for a while but eventually breaks down and the kernel explodes with such
force that is throws out its while, pulpy insides, making an audible popping sound in the process.
