Puffed rice refers to various foods made by introducing air into rice, typically in such a way that the grains of rice become larger and lighter, while also reducing moisture to achieve a crisp texture consistency. A variety of methods exist to make puffed rice, with varying effects on the final product (ref).
Rice is the seed of the grass species Oryza sativa (asian rice) or Oryza glaberrima (african rice). Rice is the most important grain with regard to human nutrition and caloric intake, providing more than one-fifth of the calories consumed worldwide by humans. Many varieties of rice are fortified to reduce malnutrition.