Popcorn seeds, also known as popcorn kernels, are a specific type of corn (Zea mays everta) that has the unique ability to pop when heated. Unlike other corn varieties, popcorn kernels have a tough outer shell (pericarp) that traps moisture inside. When the kernel is heated, the moisture turns to steam, and the pressure builds until the kernel explodes, turning it inside out and forming the fluffy snack we enjoy. Popcorn is often classified into several types based on shape, such as “butterfly” (irregular shape with protruding wings) and “mushroom” (rounder and more compact), which are favored for different uses in snacking and confectionery.