Plastic wrap keeps rice balls moist

Plastic wrap is better for keeping rice balls moist and preventing drying, making them ideal for longer transport or reheating. Aluminum foil offers some breathability, preventing the nori from becoming soggy, and is good for short-term storage when crisp nori is desired. The choice between plastic wrap and aluminum foil depends on how long the rice ball will be stored and whether a crisp nori texture is preferred.