How do they make popcorn?
Popcorn or popping corn is a type of corn, which explodes from the kernel and puffs up when heated. Corn popping was originally discovered by Native Americans, but became popular as a snack food during the United States Great Depression. Corn is able to pop because, unlike other grains, its kernels have a hard moistureproof hull and a dense starchy filling. This allows pressure to build inside the kernel until an explosive “pop” results. Some strains of corn are now cultivated specifically as popping corns. There are many techniques for popping corn. Commercial large-scale popping machines were invented by Charles Creators in the late 19th Century. Many types of small-scale home methods for popping corn also exist, with the most popular being prepackaged microwavable popcorn. Each kernel of popcorn contains a certain amount of moisture and oil. Unlike most other grains, the outer hull of the popcorn kernel is both strong and impervious to moisture, and the starch inside consists almost
