In fact, popcorn is made up of hard starch and a little water. This moisture is locked in the core. As the temperature rises, the moisture turns into steam and the pressure begins to increase. This situation continues until the kernel can no longer withstand this power, and it breaks out the goodness we know and love.
Because popcorn kernels tend to lose moisture as they age, the quality of popcorn will decrease.
To ensure that the popcorn maintains the proper moisture content, do not place the popcorn in a refrigerator or freezer. This can kill them quickly. Also do not store them in a wet basement or in a damp garage. The best place to store unexploded popcorn is the dish rack in a closed container (room temperature, below 90 °F). You can usually expect popcorn to have a shelf life of about 18 months.

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Fresh popcorn quickly absorbs moisture from the air. Because popcorn absorbs moisture, it loses its fragility and it becomes chewy. If you encounter this problem, try using the metal service door on the ejector to pop open the position to help drain the water. Please pay attention to stray popcorn!
Immediately after the popcorn is completed, the plexiglass door is ejected to allow the steam to flow out. Depending on where you place the popcorn machine, you may get more or less wet in the air. A wet basement is not ideal, but you can solve this problem by trying to keep the popcorn warm but dry.
Other factors that may work are excessive oil usage during initial bursts or excessive popcorn for your size kettle (4 ounces for 4 ounce kettles, 6 for 6 ounces, etc.). Try to try, the most important thing is to have fun!