Popcorn can be made out of any type of corn, but not all varieties of corn will pop effectively. The type of corn primarily used for making popcorn is known as "Zea mays everta." This type of corn has a unique structure that allows it to explode and puff up when exposed to high heat.
The key characteristics that make popcorn different from other corn varieties are:
Hard Outer Shell: Popcorn has a hard, moisture-resistant outer shell. When heated, the moisture inside turns into steam, creating pressure. Eventually, the pressure becomes too much for the hard shell to contain, causing it to burst open and pop.
Starch Content: Popcorn kernels have a higher starch content compared to other types of corn. The high starch content is essential for creating the fluffy texture we associate with popcorn.
Moisture Content: Popcorn kernels contain just the right amount of moisture to facilitate popping. If the moisture content is too high or too low, the popcorn might not pop correctly.
While it is possible to pop other corn varieties, they are generally not as suitable as popcorn corn. Other corn types may not have the same combination of hard shell, proper starch content, and moisture balance, which results in a less satisfactory popping experience. For example, some types of corn may only partially pop or not pop at all, leading to disappointing results.
As a result, popcorn is grown specifically for the purpose of producing popcorn, and it has been cultivated and selectively bred to ensure consistent popping characteristics.
Another reason why popcorn is not made from other corn varieties more often is consumer preference. Popcorn has become a popular snack enjoyed worldwide, and its unique characteristics, taste, and texture have made it a beloved treat. Using other corn varieties may not deliver the same familiar popcorn experience, which could deter people from adopting it as a snack.
In summary, while popcorn can technically be made out of any corn type, the special characteristics of Zea mays everta make it the preferred choice for producing the fluffy, delicious popcorn we all love.