What is the purpose of deglazing a pan?

The purpose of deglazing a pan is to incorporate browned bits into a sauce. When food is cooked in a pan, especially proteins like meat, they can leave behind flavorful bits, often referred to as fond, which stick to the bottom of the pan. Deglazing involves adding a liquid, such as wine, broth, or water, to the hot pan, which helps to loosen and dissolve these browned bits. This process not only enhances the flavor of the resulting sauce or dish but also ensures that none of those tasty bits go to waste. By scraping the bottom of the pan while the liquid simmers, the cook effectively lifts those flavors into the sauce, resulting in a rich and complex taste that is characteristic of many culinary preparations.