Shout out to all cookies and cakes eaters :p
Have you ever wondered why cookies are not soft like cakes? or.. why cookies are crunchy and crispy?
Cookies are crunchy and crispy because there is no (or little, if any) starch gelatinization or gluten formation. Cookies contains high concentration of sugar and fat which stop the gluten formation. Also, there is not enough water available for the gluten to develop in cookies.
Furthermore, since there is not enough water for the sugar to dissolve, the sugar is then responsible to the cookies’ shiny and glossy appearance.
Hooray to cookies!
BROWN, A. 2004. Understanding Food Principles and Preparation, Thomson Wadsworth.