Eating slightly undercooked rice is generally safe, but there are a few factors to consider before chowing down on those not-quite-done grains.
What causes undercooked rice?
Rice is undercooked when it hasn’t been boiled for long enough to soften the grains and achieve the desired texture. This can happen for several reasons:
- Not enough water – Without enough water, the rice can’t absorb enough moisture to become fully cooked.
- Cooking time too short – White rice typically takes 15-20 minutes to cook, brown rice 40-50 minutes.
- Heat too low – The water needs to reach a full boil to properly cook the rice.
- Incorrect rice to water ratio – Too much or too little water will affect the cooking.
- Old rice – Rice that has been stored for a long time may take longer to soften.
Is undercooked rice dangerous?
Rice is unlikely to contain harmful bacteria, but undercooking does increase the risk of food poisoning. This is because rice may contain traces of a heat-resistant bacteria called Bacillus cereus. When rice isn’t cooked to a high enough temperature to kill it, the bacteria can survive and produce toxins that cause vomiting or diarrhea. The spores can multiply rapidly if the cooked rice is left at room temperature for too long.
Groups at higher risk
While B. cereus poisoning from rice is not common, some groups are at higher risk:
- Infants and young children
- Pregnant women
- Elderly adults
- Those with compromised immune systems
Their bodies are less able to cope with food-borne illnesses. For high-risk individuals, it’s safest to ensure rice is thoroughly cooked with no crunchy or stiff grains.
Tips for cooking rice properly
Follow these steps for perfectly cooked, safe-to-eat rice every time:
- Rinse the rice thoroughly in a mesh strainer until the water runs clear. This removes excess starch.
- Use a rice cooker or saucepan with a tight-fitting lid.
- For white rice, use a 1:2 rice to water ratio. For brown rice, use a 1:2.5 ratio. For example, 1 cup rice to 2 cups water.
- Bring the water to a boil over high heat. Once boiling, reduce heat to low, cover and simmer for 15-20 minutes for white rice, 40-50 minutes for brown.
- When done, fluff the rice with a fork and let sit for 5 minutes before serving.
- Refrigerate cooked rice within 1-2 hours and use within 3-5 days.
How to tell if rice is undercooked
Check rice for these signs that it needs more cooking time:
- Crunchy or brittle: Rice should be soft all the way through.
- Chalky, stiff or dry: Well-cooked rice should be moist and tender.
- Starchy taste: The rice should no longer taste grainy or raw.
- Hard in the center: Use a fork to peek in the middle to check for uncooked kernels.
Is it safe to eat slightly stiff or crunchy rice?
Rice that is just slightly underdone is generally safe to eat. Here are a few guidelines:
- Pick out any visibly undercooked, crunchy grains.
- Make sure the center is cooked through, even if the outer grains are a little stiff.
- Undercooked brown or wild rice is lower risk than white.
- Serve immediately or refrigerate within 1 hour.
- Avoid letting sit out at room temperature.
- Reheat thoroughly before eating leftovers.
As long as the rice was cooked to a hot enough temperature to kill bacteria and not left out too long, eating it al dente style is unlikely to cause illness. However, it’s still best practice to aim for properly cooked rice, especially for at-risk groups.
Can you get food poisoning from reheating rice?
You cannot get food poisoning directly from reheating previously cooked, properly stored rice. However, reheating can increase the risk if the rice was not handled safely:
- Uncooked rice can still contain B. cereus spores. Always reheat rice to 165°F to kill bacteria.
- Cooked rice should not be left at room temperature for more than 1-2 hours. B. cereus can produce toxins.
- Cook, cool and refrigerate rice quickly, within 1-2 hours after cooking.
- Store cooked rice for only 3-5 days maximum in the fridge.
- Reheating previously cooked rice more than once is not recommended.
As long as rice has been refrigerated promptly and properly after initial cooking, reheating it to a safe temperature will make it safe to eat again.
Can you still eat rice with a slight crunch?
It’s generally considered safe to eat rice that is slightly undercooked, as long as a few precautions are taken:
- Pick out any visibly stiff or dry grains.
- Check that the center and middle layers are fully cooked through.
- Eat immediately or refrigerate within 1-2 hours.
- Store leftovers for no more than 3-5 days.
- Reheat thoroughly before eating again.
Slightly stiff exterior grains are lower risk. But rice that is crunchy throughout or has a chalky, raw taste should be cooked further before eating to minimize foodborne illness risk.
Will cooking underdone rice longer make it safe?
Yes, rice that is slightly undercooked can be made safe to eat by cooking it longer. Here are some tips:
- Add a little extra water, since drier rice takes longer to soften.
- Cover and continue cooking for 5-15 minutes. Check frequently to avoid overcooking.
- Spread rice out on a baking sheet to improve heat circulation.
- Microwave in short 2-3 minute intervals, stirring between cookings.
- Bring to a full boil on the stovetop, then reduce to low.
- Stir frequently and scrape down the sides and bottom of the pan.
The cooking time will depend on how underdone the rice is to start. The goal is to get every grain fully softened with no crunch or rawness remaining.
Does rice need to be reheated before eating?
Previously cooked, properly stored rice does not necessarily need to be reheated before eating. Here are some reheating guidelines:
- Rice that was freshly cooked does not need reheating.
- Leftover rice stored for fewer than 2 hours may be eaten cold or reheated.
- Rice stored for over 2 hours must be reheated to 165°F before serving.
- Refrigerated rice should be reheated within 1-3 days for optimal taste and texture.
- Reheated rice should be consumed immediately, not reheated again.
Proper refrigeration after initial cooking is the key to preventing illness. As long as cooled rice hasn’t sat at room temperature for more than 2 hours, it’s fine to eat it chilled if desired.
Does cooked rice need to be refrigerated immediately?
Cooked rice should be refrigerated within 1-2 hours of cooking. Leaving freshly cooked rice at room temperature allows bacteria to multiply quickly:
- B. cereus spores can survive cooking and produce toxins at warm temps.
- The “danger zone” for bacterial growth is 40-140°F.
- One hour max at room temp is recommended before refrigerating.
- Divide into shallow containers for faster chilling.
Proper, quick cooling prevents pathogen growth and rice from drying out. For food safety, don’t let cooked rice sit on the counter for longer than 1-2 hours before refrigeration.
Tips for fast cooling
- Spread rice on a sheet pan in a thin layer for fast chilling.
- Place bowl of rice in ice bath, stirring periodically.
- Use ice wands or gel freezer packs to speed cooling.
- Divide into smaller, shallow containers for fridge.
- Refrigerate rice within 1 hour, or 1-2 hours max after cooking.
How long can cooked rice be left out?
Cooked rice should not be left out at room temperature for more than 1-2 hours. After cooking, rice can be safely left out at room temperature for:
- 15 minutes: Best for immediate consumption or refrigeration
- 1 hour: Maximum recommended time at room temp
- 1-2 hours: Absolute maximum if kept hot above 140°F
Leaving freshly cooked rice on the counter overnight is unsafe due to the risk of B. cereus bacterial growth and toxin production.
Remember the 2 hour rule
As a good food safety guideline, cooked rice should be:
- Refrigerated within 1 hour (best)
- Refrigerated within 2 hours (maximum)
- Never left in the “danger zone” above 40°F for more than 2 hours.
Does rice need to be washed before cooking?
Washing rice before cooking is recommended for best flavor and texture. Here are some benefits of rinsing rice:
- Removes excess surface starch: Rice won’t be gummy or sticky.
- Cleans away impurities and dust.
- Makes grains less likely to clump when cooking.
- Enhances rice’s natural flavor.
- Helps cooked grains stay separated and fluffy.
Washing also makes rice safer to eat by removing pesticides, arsenic or debris that may be present on the surface.
How to wash rice
Rinsing rice is easy – follow these steps:
- Place dry rice in a fine mesh strainer or colander.
- Rinse under cool running water, swirling rice with your hand.
- Keep rinsing until the water runs clear, about 30 seconds.
- Drain well before cooking as usual.
Conclusion
Eating rice that is slightly undercooked is generally safe and unlikely to cause foodborne illness. For optimal safety though, rice is best cooked fully with no crunchy or dry texture remaining. Pay close attention to handling and storage time after cooking, and be extra careful when preparing rice for high-risk groups like infants, pregnant women, the elderly and those with compromised immunity.
With proper washing, cooking, rapid cooling and refrigeration, rice can be safely enjoyed without needing to stress about the consequences of the occasional al dente grain sneaking through.