One sink, one board: a Sliema beachfront kiosk
A beachfront kiosk in Sliema serves ftira, salads and grilled chicken skewers from a single 3 m × 2 m prep room. Two staff work the 12:00–15:00 rush; the outside temperature is 34°C. There is one stainless sink. It is used to wash lettuce, then to rinse raw chicken skewers, then to fill a jug for drinks. One green chopping board is wiped with a damp cloth between lettuce and chicken; the cloth is rinsed and reused until closing. In the under-counter fridge, a tray of raw chicken sits on the top shelf above an open tub of ġbejna and sliced tomatoes. The fridge display reads 8–9°C and the door is opened constantly. A pair of tongs is used to turn raw chicken and then to lift ftira from the counter. The handwash basin has no soap and is used to rinse the lettuce. No thermometer is available.
1. Identify the cross-contamination routes in the kiosk and explain which one carries the highest risk to customers.
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Routes present.
- Direct contact via the sink: lettuce is washed after raw chicken has been rinsed there. Raw chicken juice can remain on the sink surface and splash back onto the lettuce.
- Board and cloth: one board is used for both lettuce and raw chicken, and a damp cloth spreads organisms around rather than removing them. A cloth left at ambient temperature can also support bacterial growth.
- Tongs: the same tongs turn raw chicken and then handle ftira, which is ready-to-eat (RTE).
- Drip from the fridge shelf: raw chicken is above open ġbejna and sliced tomatoes.
- Hands and the handwash basin: no soap, and the basin is used for lettuce, so hand hygiene is not being achieved.
Highest risk. The raw chicken dripping onto open ġbejna and sliced tomatoes is the most serious route. These are RTE foods that will not be cooked before eating, and the fridge at 8–9°C is not cold enough to stop Listeria monocytogenes multiplying and may allow slow Salmonella growth. A single drip can transfer a large dose of organisms directly to food that is eaten cold. The tongs route is also very high risk because it happens repeatedly during service, but the drip onto open RTE food in a warm fridge combines contamination with temperature abuse.
Second highest. The sink and board routes matter, but lettuce is usually washed and the board may be cleaned; the tongs and the drip are direct, repeated, post-cleaning transfer routes.
2. List the immediate actions the staff can take during the lunch service without buying new equipment.
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Stop the highest-risk transfers first.
- Remove the open ġbejna and sliced tomatoes from under the raw chicken. If there is any visible drip or uncertainty, discard them; do not serve them. Move raw chicken to the bottom shelf in a sealed container.
- Stop using the same tongs for raw chicken and RTE food. Use one pair only for raw chicken, keep it in a marked container, and use a clean pair or clean hands for ftira. If there is only one pair, handle RTE food first, then raw chicken, and clean the tongs thoroughly afterwards.
- Stop washing lettuce in the sink after raw chicken. Wash lettuce first in a clean bowl, or use pre-washed lettuce for the rest of service. Clean and disinfect the sink before any further RTE use.
- Replace the damp cloth with disposable paper towels or a freshly laundered cloth. Clean and disinfect the board between raw and RTE use with a food-safe disinfectant at the correct concentration and contact time.
- Put soap at the handwash basin and use it only for hands. Wash hands after handling raw chicken, after touching the bin, and before handling RTE food.
- Check the fridge with a thermometer as soon as one is available. In the meantime, move high-risk RTE food to a colder unit or ice, and keep the fridge door closed as much as possible.
Communication. Tell the person in charge immediately. If any RTE food may have been contaminated, it must not be sold.
3. Recommend permanent design, equipment and monitoring changes to prevent recurrence.
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Separation by design. The single prep room is too small for raw and RTE work to overlap at peak times. Create separate colour-coded areas or, at minimum, a strict time separation: RTE prep first, then raw chicken, followed by cleaning and disinfection. Use colour-coded boards and knives (for example, red for raw meat, green for salad/RTE) and separate tongs stored in labelled containers.
Sink and handwash provision. Install a dedicated handwash basin with soap and paper towels that is not used for food. Provide a separate food-prep sink, or use a bowl for washing lettuce so the sink is not a shared raw/RTE contact surface. If a second sink is impossible, write a procedure that controls the order of use and requires disinfection between tasks.
Fridge layout and temperature. Raw meat must be stored below and separately from RTE food, in lidded containers. Replace or repair the under-counter fridge; 8–9°C is not acceptable for high-risk food. Provide a fridge thermometer and a probe thermometer, and record temperatures at opening, mid-service and closing. Reduce door opening by keeping a small service fridge for RTE items and a separate unit for raw chicken.
Cleaning and monitoring. Write a cleaning schedule for the sink, boards, tongs and cloths, specifying detergent, disinfectant concentration, contact time and frequency. Use disposable cloths or change cloths frequently. Train both staff in hand hygiene and in the raw/RTE separation rules, and verify with spot checks. Record fridge temperatures, cleaning checks and any corrective action so the kiosk can show that controls are working.