During the processing of early popcorn, the corn (many grains and miscellaneous foods) can be placed in a special container and heated, so that the temperature of the pot is constantly increasing under the condition of high temperature and high pressure. The pressure of the gas is also increasing.

Modern inventors have designed an electric pot for families who like popcorn. It is said that it takes only 10 minutes to make a large pot of popcorn. Many local TV stations in the United States often broadcast common knowledge on how to popcorn, and also introduce various methods of popcorn popping. An expert who frequently appeared on TV screens and claimed to be the "Popcorn Popper" expert Ryton Bahar has become a well-known figure in the United States-this king came to power and talked about the "corn corn".

Then, with a loud bang, the lid of the machine was opened, the corn was suddenly released at normal temperature and pressure, the gas in the pot expanded rapidly, and the pressure quickly decreased, making the pressure difference between the inside and outside of the corn kernels larger, resulting in the corn kernels. The high-pressure water vapor also expands sharply, bursting the corn kernels instantaneously, which becomes popcorn, and the internal structure and properties of the corn will change.

Most of the popcorn is basically popcorn popped by popcorn after simple heating, and the processing container is no longer the early "converter", so it also avoids the harm caused by lead.