To be on the safe side, I've always followed the rules for meats while cooling stocks....... "During cooling, the product's maximum internal temperature should not remain between 130°F and 80°F for more than 1.5 hours nor between 80°F and 40°F for more than 5 hours. This cooling rate can be applied universally to cooked products (e.g., partially cooked or fully cooked, intact or non-intact, meat or poultry) and is preferable to (2) below." More here: http://www.fsis.usda.gov/OPPDE/rdad/FRPubs/95-033F/95-033F_Appendix%20B.htm Here's a good article that highlights the possible dangers involved in careless stock handling..... Bending the Rules on Bacteria..... http://www.nytimes.com/2011/08/24/dining/bending-the-rules-on-bacteria-and-food-safety.html?pagewanted=all&_r=0