noun
puffing up
Technical term for the process of puffing grains such as rice or corn, often used in food science and manufacturing contexts. The cross-reference 膨化 is a more general Japanese term for expansion or swelling.
See also: 膨化
パッフィング加工によって、米やトウモロコシがふっくらと膨らむ。
Through puffing processing, rice and corn become plump and expanded.