In a suspected food poisoning incident at a private company canteen in Devanahalli in north Bengaluru, at least 97 employees fell ill after consuming idli, vada, and sambar-rice served during breakfast and lunch.
The employees reportedly developed symptoms such as abdominal pain, vomiting, and diarrhoea later the same day and were admitted to two private hospitals for treatment. Bengaluru Rural District Health Officer Dr Krishna Reddy confirmed that the patients were stabilised with intravenous fluids and that no casualties have been reported so far.
Authorities have collected samples of the leftover food for laboratory testing, and investigations are underway to examine hygiene, food preparation, and storage practices at the canteen. Officials say the results of the food analysis will determine the exact cause of the suspected contamination.
Employees Hospitalised After Canteen Meals
According to reports, the affected employees consumed idli and vada for breakfast and later had rice with sambar for lunch at the office canteen on Tuesday. By the evening, many began experiencing symptoms consistent with food poisoning, including stomach pain, vomiting, and diarrhoea.
Several workers required hospitalisation by the following morning, prompting health authorities to respond to the incident. The employees were admitted to two private hospitals, where doctors treated them primarily with intravenous fluids to stabilise their condition. Health officials have classified the case as suspected food poisoning and launched an investigation into the canteen’s food preparation and storage practices.
Speaking about the incident, Bengaluru Rural District Health Officer Dr Krishna Reddy stated that samples of the leftover food have been collected and sent for laboratory analysis.
“No casualties have been reported and the patients were treated with intravenous fluids,” he said, adding that authorities are awaiting test results to confirm whether bacterial contamination or other factors were responsible.
Investigators are also examining the kitchen facilities, water sources, storage areas, and hygiene practices followed by the canteen staff.
Summer Risks For Fermented Foods
The incident has sparked discussions around food safety, particularly when it comes to fermented foods such as idli, dosa, and vada. These dishes are widely regarded as healthy and easy to digest because they are made through a natural fermentation process in which microorganisms such as bacteria and yeast break down sugars and starches in the batter. This process improves flavour, texture, and nutritional value.
However, experts warn that high temperatures and humidity during summer months can significantly accelerate fermentation and microbial growth.
Under normal conditions, idli or dosa batter may take eight to ten hours to ferment. But during hot weather, the process can happen much faster, sometimes in nearly half the time. If the batter is left unattended for too long, it may become over-fermented and develop excessive acidity.
In such conditions, harmful bacteria or mould can grow alongside the beneficial microbes used in fermentation, increasing the risk of contamination and food-borne illness.
Warm weather also creates an ideal environment for microbial multiplication, which means even minor lapses in hygiene such as unclean utensils, contaminated water, or poor handling practices can quickly lead to bacterial growth.
Another key concern is the shorter shelf life of fermented foods during summer. Experts note that fermented batter and prepared dishes can spoil quickly if they are not stored properly or consumed within a limited timeframe.
Delays in refrigeration, exposure to heat, or leaving food at room temperature for extended periods can significantly increase the risk of spoilage. In large institutional kitchens such as office canteens, where hundreds of meals are prepared and stored simultaneously, maintaining strict temperature control and hygiene standards becomes even more critical.
The Food Safety and Standards Authority of India (FSSAI) has laid down detailed regulations governing fermented food products under the Food Safety and Standards (Food Products Standards and Food Additives) Regulations, 2011. These guidelines specify standards for ingredients, acidity levels, and microbial safety.
For instance, fermented milk products must contain at least 2.9 percent milk protein by mass and a minimum acidity level of 0.45 percent expressed as lactic acid. The regulations also distinguish between fermented foods that undergo heat treatment after fermentation and those that do not, requiring strict monitoring of contaminants, preservatives, and heavy metals.
In addition, FSSAI mandates compliance with general hygienic and sanitary practices outlined in Schedule 4 of its regulations. These include maintaining clean kitchen environments, ensuring proper hand hygiene among food handlers, using safe water sources, and preventing cross-contamination during food preparation.
For fermented products that claim probiotic benefits, the regulations also require a minimum count of beneficial microorganisms per serving. Experts emphasise that adherence to these guidelines is essential to ensure food safety, especially in large-scale food service operations.
The Logical Indian’s Perspective
The Bengaluru incident serves as a reminder that even everyday foods widely considered healthy can become hazardous if food safety protocols are not strictly followed. Fermented dishes such as idli and dosa are staples across Indian households and workplaces, but their preparation requires careful attention to hygiene, storage conditions, and timing especially during the hot summer months when microbial growth accelerates rapidly.
In large workplaces where canteens serve hundreds of employees daily, ensuring safe food practices is not just a regulatory requirement but also a moral responsibility. Regular inspections, strict adherence to FSSAI guidelines, proper training of kitchen staff, and transparent accountability mechanisms can go a long way in preventing such incidents.
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