Reheat rice thoroughly to a steaming hot temperature (at least 74°C or 165°F) and only reheat it once to minimize the risk of Bacillus cereus bacteria growth.
Reheating rice dishes requires careful attention to prevent food poisoning. Rice can contain spores of Bacillus cereus, a bacterium that produces toxins. These spores can survive even when rice is cooked. If cooked rice is left at room temperature, these spores can multiply and produce toxins that cause vomiting and diarrhea. Reheating won't always kill these toxins.
Here's a step-by-step guide to safely reheating rice:
Cool the rice quickly: After cooking, cool the rice as quickly as possible (ideally within one hour). Spread it out on a tray to help it cool faster. Refrigerate it promptly.
Refrigerate properly: Store the cooked rice in the refrigerator at a temperature below 5°C (41°F). Use a shallow container to ensure even cooling.
Reheat thoroughly: When reheating, ensure the rice is steaming hot all the way through. The core temperature should reach at least 74°C (165°F). Use a microwave, stovetop, or oven to reheat.
Check the temperature: Use a food thermometer to verify the internal temperature, especially when using a microwave.
Serve immediately: Once reheated, serve the rice immediately. Don't let it sit at room temperature.
Reheat only once: Do not reheat rice more than once. Repeated reheating increases the risk of bacterial growth.
When reheating rice in the microwave, add a tablespoon or two of water to the rice before covering it with a microwave-safe lid or plastic wrap. This helps to create steam and prevents the rice from drying out. Ensure the rice is piping hot throughout before consuming.