For many, cooking rice is the easiest job and for the right reasons, you can cook a lot and store it for later. But the problem is not that; it is about how you store it. Lurking in your pile of grains is a hidden bacterium called Bacillus cereus. It thrives on raw rice and survives even after cooking. And the alarming bit is that if you do not store your rice correctly, this bacterium can multiply, releasing toxins that can cause food poisoning. Food poisoning could lead to vomiting, diarrhoea, cramps, and, in rare cases, infections so severe they can cause organ failure. It is scary, but the worst part is that you cannot see, smell, or taste the danger. A bowl of rice can look perfectly fine while it can quietly wreak havoc in your stomach.A common thing we all do is leave the leftover rice in the kitchen or on the dining table with just a lid on. But it is more than that, and it is the temperature that plays an important role. So, we are making a huge mistake if we leave it at room temperature. Here is the safer way to deal with leftover rice and cut the risk of falling seriously sick:Unlike pasta or potatoes, rice is classed as a high-risk food once cooked. In commercial kitchens, chefs treat it with caution. It is rarely kept overnight and almost never used the next day. That is because of Bacillus cereus and its stubborn little spores.The Spores That Survive the HeatCooking rice does not wipe out Bacillus cereus. The spores are heat-resistant, which means they are still alive and kicking after you have drained your pan. Once the rice cools down, those spores can multiply into bacteria at lightning speed. The longer your rice sits at room temperature, the more the bacteria multiply. And unfortunately, their toxic by-products do not just disappear when you put the rice in the microwave.Reheating rice does not make it safe. The toxins Bacillus cereus produces are heat-stable. They survive your microwave, oven, or stove reheat session. That means the rice could look fine, taste fine, and even smell fine, but still make you sick.The Common Storage MistakeWhere do most people go wrong? They leave the rice out too long before refrigerating it. That is more than enough time for Bacillus cereus to thrive and pump toxins into your rice. The second mistake is thinking that reheating alone will make it safe. Unfortunately, it will not. As TikTok chef Joshy Jin says, those toxins are invisible, tasteless, and can survive heating. A bowl that looks perfectly fine can knock you down with food poisoning in just hours.How to Store Leftover Rice the Right WayIf you must keep leftover rice, speed is everything. Here is what food safety experts and chefs recommend:Cool it fast. Spread the rice out on a plate or baking tray so it cools within 10 minutes. Clumping it in a pot traps heat and gives bacteria time to multiply.Refrigerate quickly. Once it is no longer steaming, cover it and get it into the fridge. Do not leave it hanging out on the counter.Stick to the 24-hour rule. The Food Standards Agency advises eating refrigerated rice within one day. Some chefs say two, but the fresher, the safer.Reheat until piping hot. If you do reheat, make sure it is steaming all the way through, not just lukewarm in the middle. Fresh is Best Any DayRice is deceptively dangerous when it comes to leftovers. Bacillus cereus spores are survivors, and once they release toxins, no amount of reheating can save your meal. The safest thing to do is to cook only what you need. If you are planning fried rice tomorrow, store it properly, cool it fast, and keep it in the fridge for no longer than a day. But otherwise, embrace the ritual of fresh rice-making.