The term "puffed" refers to a type of food that has been expanded or puffed up by using heat and/or pressure. This process causes the food to become light, fluffy, and porous in texture. Puffed foods can include cereals such as rice krispies, snack foods like potato chips or corn puffs, and even some types of pasta. The term "puffed" is also used to describe a type of bread that has been lightly toasted with butter or oil, giving it a crispy texture on the outside while remaining soft on the inside.