Popcorn is a type of corn that expands from the kernel and puffs up when heated.
Popcorn is able to pop like amaranth grain, sorghum, quinoa, and millet.
When heated, pressure builds within the kernel, and a small explosion (or “pop”) is the end result. Some strains of corn are now cultivated specifically as popping corns.
There are various techniques for popping corn.
Along with prepackaged popcorn, which is generally intended to be prepared in a microwave oven, there are small home appliances for popping corn.
These methods require the use of minimally processed popping corn.
A larger-scale, commercial popcorn machine was invented by Charles Cretors in the late 19th century.
Unpopped popcorn is considered nonperishable and will last indefinitely if stored in ideal conditions. (source)
So can hamsters eat unpopped popcorn?
Yes they can nibble it, however it holds no nutritional value for them so don’t give them too much. A few kernels will suffice for them.