HACCP by Process

Food Storage in HACCP: Chilled, Frozen & Dry Storage Controls

Food Storage Controls: Chilled, Frozen & Dry Storage HACCP Requirements

Storage is where food spends most of its time in your business, and poor storage accounts for a significant proportion of food safety incidents. Whether chilled, frozen, or ambient, every storage area needs defined controls, regular monitoring, and clear procedures. Your HACCP plan should address temperature management, segregation of raw and ready-to-eat foods, stock rotation, and allergen controls across all storage types. Getting storage right protects shelf life, prevents cross-contamination, and ensures the safety work done at delivery is not undone before cooking even begins.

Key takeaways

Set fridges between 1C and 5C - the legal max is 8C but best practice is below 5C

Store raw meat on the lowest fridge shelves, ready-to-eat food above, to prevent drip contamination

Frozen food must be held at -18C or below, with daily temperature monitoring

Label all opened and prepared foods with the date and a revised use-by date

Inspect dry stores weekly for pests and maintain at least 15cm floor clearance on shelving

Chilled Storage: Temperature and Organisation

UK food hygiene regulations require chilled food to be stored at or below 8C, but best practice - and the standard most EHOs expect - is 5C or below. Set your fridges to operate between 1C and 5C to allow headroom before reaching the legal limit. Monitor fridge temperatures at least twice daily (morning and afternoon), using either a calibrated thermometer placed inside the unit or the built-in digital display if it has been verified against a reference thermometer. Record these readings on a temperature log. If the temperature rises above 5C, investigate the cause (door left open, overstocking, faulty seal, compressor issue) and take corrective action. Food that has been above 8C for more than 4 hours should be discarded. Organise fridges with raw meat on the lowest shelves and ready-to-eat food above to prevent drip contamination. Ideally, use separate fridges for raw and ready-to-eat products. Cover all food, label with date of preparation or opening, and apply first-in-first-out (FIFO) rotation. Do not overpack fridges - air circulation is essential for even cooling.

Frozen Storage: Maintaining the Cold Chain

Frozen food must be stored at -18C or below. At this temperature, bacterial growth is halted entirely, though bacteria are not killed - they resume multiplying once the product thaws. Monitor freezer temperatures daily and record readings. Modern walk-in freezers often have alarm systems that alert staff if the temperature rises above -15C; if yours does not, consider fitting one. Organise frozen storage with clear labelling showing the product name, date frozen, and use-by date. While commercially frozen products have long shelf lives, food frozen in-house should generally be used within 3 months for best quality, though safety depends on consistent temperature rather than duration. Never refreeze food that has been fully thawed, unless it has been cooked first. If a freezer fails, food that still contains ice crystals and reads below -5C at the core can be refrozen if the failure lasted less than 2 hours. Otherwise, move it to a working freezer immediately or cook and use within 24 hours. Record the incident, the temperatures found, and the corrective actions taken.

Dry Storage and Ambient Products

Dry storage areas should be cool, dry, well-ventilated, and free from pests. Ideal ambient temperature is between 10C and 21C, though UK regulations do not set a legal limit for dry goods. Store all items off the floor on shelving (at least 15cm clearance) to facilitate cleaning and deter pests. Keep products in their original packaging until use, or transfer to sealed, food-grade containers with clear labels. FIFO rotation applies here too - check date codes regularly and bring older stock to the front. Separate non-food items (cleaning chemicals, pest control products) from food storage entirely, preferably in a locked area. Allergen management is critical in dry stores: keep known allergen-containing ingredients (flour, nuts, sesame) clearly labelled and, where practical, on dedicated shelves to reduce the risk of cross-contact during retrieval. Inspect dry stores weekly for signs of pest activity including droppings, gnaw marks, webbing, or damaged packaging.

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Stock Rotation and Shelf Life Management

Effective stock rotation prevents food from exceeding its safe shelf life. Use-by dates are legally binding in the UK - selling or serving food past its use-by date is an offence, regardless of appearance. Best-before dates relate to quality rather than safety, but serving poor-quality food still damages your business. Implement a day-dot or label system for prepared foods and opened ingredients: when a product is opened or decanted, label it with the date opened and the new use-by date (typically 2-3 days for high-risk items, or as specified by the manufacturer once opened). Train staff to check dates during delivery, when restocking shelves, and before use. Carry out a weekly stock audit to identify items approaching their use-by date and plan menus to use them. Wastage from expired stock is not just a financial cost - it may indicate ordering volumes are too high or rotation procedures are not being followed.

What to do next

Implement a twice-daily temperature logging routine

Record fridge and freezer temperatures every morning and afternoon using calibrated thermometers. Define a corrective action for any reading outside the target range.

Introduce a day-dot labelling system

Use colour-coded day dots or pre-printed labels for all opened and decanted products. Include the product name, date opened, and use-by date.

Conduct weekly stock audits

Check all storage areas for items approaching use-by dates, signs of damage, and pest activity. Record findings and take corrective action immediately.

Common mistakes to avoid

Mistake

Overpacking fridges so air cannot circulate

Instead

An overpacked fridge cannot maintain a consistent temperature throughout. Leave gaps between items and avoid blocking air vents. If you regularly run out of space, you may need additional cold storage.

Mistake

Storing cleaning chemicals alongside food in the dry store

Instead

Chemicals must be stored separately from food at all times, ideally in a locked cupboard or a separate room. Cross-contamination from chemical spills is a serious food safety hazard.

Frequently asked questions

What temperature should a fridge be for food safety?

The legal maximum is 8C under UK food hygiene regulations, but best practice is between 1C and 5C. Most Environmental Health Officers expect to see fridges running at or below 5C, and this gives you a safety buffer before reaching the legal limit.

Can I refreeze food that has thawed?

You should not refreeze food that has fully thawed, unless you cook it first. If a freezer fails and food still contains ice crystals, it can be refrozen if the failure lasted less than 2 hours and the core temperature remains below -5C.

How often should I check fridge temperatures?

At minimum, check and record fridge temperatures twice a day - once in the morning and once in the afternoon. High-risk operations or businesses with busy kitchens may benefit from more frequent checks or continuous monitoring with data loggers.

Do I need separate fridges for raw and ready-to-eat food?

Separate fridges are best practice and strongly recommended. If space does not allow it, store raw meat on the bottom shelf and ready-to-eat food on higher shelves, with physical separation where possible. EHOs will accept this provided there is no risk of drip contamination.

HACCP by Process