A (3:07)
To understand popcorn, we first have to understand where popcorn comes from, that being Corn Corn in the popcorn kernel are unique among most other grains due to the outer hull of the kernel. The hull can be viewed as the outer shell of the seed protecting the internal part known as the endosperm. The inside of the seed holds a lot of starch and also contains both oil and water. This gives the inside of the seed a moisture level of roughly 14 to 20%. When the kernel is heated, the moisture inside the seed turns into a steam. The steam causes the starch to become softer and gelatinized. As the pressure of the steam builds up, the hull of the kernel will break. The hull breaking allows the kernel to expand forcefully as the starch and protein turn into a foam. As the foam cools, it turns into starch and then into popcorn. Popcorn kernels are typically sold dry as having too much moisture within the seed results in the expansion of popcorn being too low. Additionally, there's a risk of mold if the seeds aren't dried out. This is why we see hard, textured popcorn kernels for sale. Not all corn makes for good popcorn. There are types of corn specifically cultivated to be used for popcorn. The most common type of corn used is known as flint corn. Flint corn can also be known as Indian corn or calico corn. This variant of corn contains less of the softer forms of starch than other types of corn. The lack of soft starch causes the corn not to have dents between each kernel. Additionally, the outer layer or the hull is very hard and can be likened to flint, giving flint corn its name. Historically, flint corn was cultivated by Native Americans, first starting in Mexico and then the American Southwest around the year one. The variant then spread through North America by the year 1500. Flint corn is unique from other types of corn in a few key ways. One way is that it contains less water, making it less susceptible to the cold and able to survive longer in freezing temperatures. Additionally, the coloration of flint corn is not the stereotypical white and yellow that we tend to think of. Rather, flint corn is multicolored, having the colors of red, yellow, orange, white, blue and black. There is a science to popping the perfect bowl of popcorn. If popcorn is heated at too fast a rate, the hull can burst too quickly, preventing the starch from having time to gelatinize. If the starch doesn't gelatinize in time, the kernel will only be partially popped and have a hard center on the opposite side of the spectrum. Popping too slowly will also cause issues. When heated too slowly, the steam can leak out of the tip of the popcorn kernel, preventing enough pressure from building up and leaving you with an unpopped kernel. If you pop popcorn at the perfect temperature, you will still find that some kernels didn't pop. This is a result of the kernels not having enough moisture inside to expand. In the industry, these pieces are known as old maids. You can actually solve this non popping issue by remoisturizing the kernel. Selling popcorn depends on several variables. Popcorn can come in different colors, shapes and sizes, so it's important for sellers to know what appeals to consumers. Though the kernel of the popcorn can vary in color, the resulting pop will typically either be yellow or white and is considered either rice type or pearl type. Pearl type is rounded, typically yellow in color, and is the most sold type commercially. Meanwhile, rice type popcorn is longer, pointed in both ends and is typically white. For sellers, pearl popcorn sells better because the pop is larger. Because pearl type popcorn is typically yellow, yellow popcorn also sells better. Popcorn is actually one of the oldest snack foods with its origin dating back thousands of years to the early Americas. If you remember back to my episode on the subject, corn is believed to have been domesticated about 9,000 years ago in central Mexico. Many experts believe that corn was developed through the crossbreeding of different wild grasses. The oldest evidence of popcorn was found in the Bat Cave, which is part of Carlsbad Caverns in New Mexico. These ears can be dated back 5,600 years. Other early instances of popcorn have been found in Peru and Utah. Dating back about 1000 years. Popcorn actually had a place in the Mesoamerican culture, being used in worship ceremonies by Aztecs as decoration on headdresses, ornaments and necklaces. Europeans were first introduced to popcorn when they traveled to the Americas. The first recorded instance of Europeans finding popcorn comes from the French. Around the year 1612, the French were exploring the Great Lakes region of North America and came across the Iroquois who were popping corn using heated sand and a pottery vessel. Popcorn was embraced by the French, who quickly adapted the food into their diet. Many colonialists began placing popcorn in a bowl with milk, which became the precursor to modern cereal. Entering into the 19th century, popcorn began to be used as a holiday decoration Due to its low cost, popcorn could be strung on thread to create a cheap type of garland. Kernels were initially sold in the 19th century under the names of pearls or non pere. In the east coast of the United States, the word popcorn was officially documented in John Russell Bartlett's Dictionary of Americanisms in 1848. Popcorn became much more accessible to the general public after Charles Craters created the first popcorn maker in 1885. Craters had owned a bakery and confectionery shop near Decatur, Illinois. One of the main things Craters sold was freshly roasted peanuts. Craters had purchased a machine to roast the nuts, but was unsatisfied with how it worked. In his frustration, he redesigned the machine to work better. During the redesign process, Craters realized the machine could be used for more than just peanuts. It could also pop popcorn. Seeing success from the machine, Craters moved to get a vendor's license so he could sell the product in front of his shop. This led to the creation of the company Sea Craters Company which still operates today. The machine Craters made automated the corn roasting process. Craters continued to work on improving this process, eventually creating a steam machine that allowed him to roast the popcorn in a mixture of butter, lard and salt. This became the first machine to pop popcorn both uniformly and in seasoning. The success of the invention led Craters to apply for a patent which he received in 1893. Craters later took his invention to Chicago for the 1893 World's Fair.