To deglaze is to add liquid to a hot pan after browning food, then loosen the caramelized residue—called fond—from the bottom of the pan. The liquid dissolves the fond and incorporates its concentrated flavour into a sauce, gravy or braising liquid. Deglazing is a fundamental technique in professional cooking.
After searing a steak, a cook may remove excess fat, add shallots and deglaze with red wine before reducing the liquid and adding stock. A roasting pan can be deglazed with water or stock to create the base for gravy. White wine is often used to deglaze a pan after cooking fish or shellfish.
Deglazing dissolves browned residue from the cooking surface. Reduction concentrates a liquid by evaporation. A pan sauce may be deglazed first and reduced afterward, but the two techniques are not the same.
Do not deglaze with a pan full of burnt black residue, as the bitter flavour can carry into the sauce. Avoid adding too much liquid if the recipe requires a concentrated sauce, and allow the fond to dissolve before straining or finishing.
Chef’s tip: the best fond is deeply browned, not burnt. Use a liquid that complements the main ingredient and adjust the final seasoning after reduction.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.