Source Texts
Text
Chemists M.H. Gamble, P. Rice, and J.D. Selman studied the mass and heat transfer processes that occur when foods, such as the Indian snacks malapua and puri bhaji, are oil fried. During frying, water in the crust evaporates, leaving voids that oil (a pure fat) can fill. As the process continues, water from the food’s center moves to the crust as long as the crust remains permeable. Therefore, it is likely that, all other things being equal, sections of a food that lose less moisture during the frying process _______