To serve, gently reheat the soup, taste, and adjust the seasonings as necessary. (humanesociety.org)
Reheat the soup on a low setting (make sure it doesn't boil) and keep stirring until it thickens a little. (ourkitchen.fisherpaykel.com)
The soup thickens dramatically upon chilling, so stir in some hot water or broth when reheating the soup to get it back to the right consistency. (peachesplease.com)