Research: Why cookies crumble
Probably pressured by society's great demand for scientific info on crumbling cookies, Loughborough University’s Ricky Wildman decided to solve some cookie mysteries last year. Some quotes:
“When you take (a biscuit) out of the oven it likes to absorb moisture from the atmosphere,” Loughborough University’s Ricky Wildman told BBC Radio.
“If the humidity of the atmosphere is set incorrectly, some parts of the biscuit are trying to dry out while some parts of the biscuit are trying to suck moisture in."
“Certain parts are contracting, others are expanding. This sets up internal forces within the biscuit and it effectively self-destructs.”