How Long Does It Take For Cornstarch To Thicken Gravy?
Cornstarch usually takes about 5-10 minutes to thicken gravy. It works best when mixed with a small amount of cold water or broth to make a slurry before being added to the hot liquid. The heat must be maintained while stirring constantly until the desired consistency is achieved. The amount of cornstarch required for thickening depends on the quantity of liquid being thickened.