Pop-rock-corn is a type of Ninjago wildlife found in the Caves of Despair. It is a rock-like organism (described as a type of coral) that takes the shape of popped corn kernels. However, as its name suggests, it is completely inedible due to its hard surface.
Pop-rock-corn is described as appearing in a variety of sizes, shapes, and colors, but it is unclear if this is variation within the species or evidence of multiple subspecies.
Pop-rock-corn comes in many shapes, sizes, and colors, but this one's living cave coral, and it's not edible.