Fruit and vegetable display guide: what to chill and what to keep out of the cold

Which produce wants what

Varieties and ripeness change these needs, so treat the table as a starting point and watch how your own stock behaves.

Chilling injury: when cold does harm

Many tropical and subtropical fruits and vegetables suffer 'chilling injury' when held too cold for too long: skins darken or pit, flesh turns watery, flavour fades and ripening goes wrong. The damage often shows only after the produce returns to room temperature, in the customer's kitchen. This is why bananas, mangoes and tomatoes generally belong on cool ambient displays, not in a chilled case.

Humidity and misting

Produce keeps losing water after harvest, and refrigeration dries the air. Greens and herbs in a dry chilled case wilt within hours. Produce displays therefore aim for high humidity: gentle airflow, moisture-retaining packaging, and in some stores misting systems that spray a fine water mist over greens. Misting needs clean, potable water, regular cleaning of nozzles and lines, and drainage. Overdone, it leaves produce wet and encourages rot.

Ethylene: keep ripeners apart

Ripening fruits such as bananas, mangoes, papayas and apples release ethylene gas, which speeds ripening and yellowing in other produce nearby. Leafy greens, cucumbers and many vegetables are sensitive to it. Keep heavy ethylene producers away from sensitive items, in separate displays or at least separate zones, and do not store them together in the same back-room chiller.

Equipment options

• Open multideck produce cases: self-service in air-conditioned stores; usually set warmer than dairy cases.
• Refrigerated islands or tables: displays of greens, berries and packed produce in the centre of the department.
• Ambient racks and tiered stands: for chilling-sensitive and dry produce, shaded from sun and heat.
• Closed glass-door or serve-over chillers: for cut fruit and salad packs, which are ready-to-eat and need full refrigeration.

Cut fruit is a different product

Once fruit is cut or peeled, it becomes a ready-to-eat food that spoils quickly and can carry food-safety risks. Common guidance is to keep it at 5 °C or below. Display cut fruit and salad packs in a closed refrigerated case, not on an open produce table, label them with preparation date and discard according to your policy. Juice bars and cut-fruit counters should treat their display like a deli counter.

Non-AC stores and street-facing shops

Many Indian produce shops are open to the street and not air-conditioned. Open multidecks do not work well here; the air curtain is overwhelmed by heat and humidity. A small glass-door chiller for herbs, greens, mushrooms and cut produce, combined with shaded ambient racks for everything else, is usually a better arrangement. Keep produce out of direct sun, which heats it far above air temperature.

Back-room storage

Store stock and display are linked. Greens and berries need refrigerated back-room storage; chilling-sensitive produce needs a cool room that is not too cold; onions and potatoes need dry, dark ventilation. If you have only one chiller, set it for the produce that suffers most without cold and keep chilling-sensitive items out of it.

Sizing the chilled display and questions to ask

Most of a produce department does not need refrigeration, so size the chilled section by the share of sales that does: greens, herbs, mushrooms, berries, packed salads and cut fruit. Measure how much of each you display on a busy morning and allow for seasonal peaks, such as summer fruit or winter greens. A chilled display that is too large tempts staff to fill it with produce that would be better kept out of the cold. Before buying, ask the supplier the following.

• What temperature range does the case hold, and can it be set warmer for produce?
• How does the case manage humidity, and is misting available or compatible?
• At what room temperature and humidity was it tested?
• How is defrost and misting water drained?