What type of popcorn should one buy for a popper?

For a popper, you should buy popcorn kernels specifically labeled as "popping corn" or "popcorn for popping." These kernels are specifically designed to expand and pop when heated, resulting in fluffy and crunchy popcorn. Avoid using other types of corn, such as field corn or dent corn, as they are not suitable for popping and may result in poor or inconsistent results.