Reported by: Oahimire Omone Precious | Edited by: Oravbiere Osayomore Promise.
A common kitchen shortcut embraced by millions of Nigerians—boiling eggs directly inside the pot while cooking rice—has come under sharp scrutiny as health experts warn that the practice carries significant risks of bacterial contamination, food poisoning, and cross-infection, particularly for young children, pregnant women, and individuals with weakened immune systems. The warning, which has gained renewed attention following reports on Sunday, 5 July 2026, challenges a deeply ingrained habit in many Nigerian households, especially in hostels and busy homes, where the practice is seen as a convenient way to save time, gas, and effort by preparing two meal components simultaneously. While the convenience is undeniable, experts are now urging Nigerians to reconsider, citing compelling research that demonstrates how unwashed eggs can transfer dangerous pathogens like Salmonella and E. coli into the rice.
The primary concern centres on the eggshell, which can carry harmful bacteria such as Salmonella and Escherichia coli (E. coli), particularly if contaminated with poultry droppings. These bacteria are common causes of food poisoning, with symptoms often including diarrhoea, stomach cramps, fever, and vomiting. In severe cases, some strains of E. coli can cause bloody diarrhoea and kidney complications, posing a serious threat to vulnerable individuals. An academic study found that rice cooked with unwashed eggs still in their shells showed detectable levels of E. coli and Salmonella, while rice cooked with properly washed eggs did not. This suggests that the risk is primarily associated with hygiene practices rather than any inherently poisonous substance in the eggshell itself. However, experts caution that even thorough washing may not eliminate all microscopic pathogens, as bacteria can still transfer to the rice as the water heats up.
Another dimension of the risk involves cross-contamination. Rice itself can contain spores of Bacillus cereus, a type of harmful bacteria that may not be killed by cooking or reheating. When protein sources such as eggs are added to the rice, the risk of bacterial growth increases, as B. cereus can cause two types of gastroenteritis—emetic (vomiting) and diarrhoeal. Cooking both ingredients together also disrupts the ideal cook time for each, often leaving eggs overcooked and rubbery or rice unevenly cooked. Furthermore, if an egg cracks during cooking, the egg white or yolk can leak into the rice, affecting both the quality and safety of the meal. Experts also note that prolonged high heat may cause some loss of nutrients in the egg and can lead to the formation of nitrogen oxides, which can give the egg a greenish discolouration.
Dietitians and food safety experts recommend boiling eggs separately in clean water for at least 10 to 12 minutes to ensure they are fully cooked and safe. Washing eggs thoroughly before cooking, ideally with salt water, can help reduce surface contamination, and boiling at 70 degrees Celsius (160 degrees Fahrenheit) is sufficient to eliminate harmful bacteria. For those who still wish to cook eggs alongside rice without submerging them in the same water, experts suggest placing the raw eggs in a small steaming basket, sieve, or an elevated heatproof bowl over the cooking rice. This method cooks the egg using steam without allowing direct contact with the rice water, thereby minimising the risk of cross-contamination. While some experts maintain that thoroughly washing eggs and ensuring proper boiling temperatures can make the practice safe, the consensus remains that separate boiling is the safest approach to protect families from unnecessary health risks. In a country where food safety education is often limited and economic pressures drive many to seek shortcuts, the warning serves as a timely reminder that a few extra minutes in the kitchen can make all the difference between a nutritious meal and a potential medical emergency.
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