Improperly stored leftover rice poses a significant risk of food poisoning due to the potential growth of Bacillus cereus bacteria. This bacterium produces toxins not destroyed by reheating, leading to vomiting and diarrhea. Experts emphasize the importance of cooling cooked rice as quickly as possible – ideally within one hour – and refrigerating it promptly. Rice should be spread out to cool rapidly and stored in airtight containers. Freezing leftover rice is also a safe option for longer-term storage. Awareness of these safe handling practices is vital, as many individuals are unaware of the dangers associated with incorrectly stored cooked rice.