Safe Food Storage and Kitchen Hygiene: A Practical Family Guide

The Scale of Food Poisoning in the UK

Around one million people suffer food poisoning in the UK every year. Most cases are mild and resolve within a few days without medical treatment, but food poisoning can be serious and even fatal, particularly for young children, older adults, pregnant women, and people with weakened immune systems. The vast majority of cases are caused by bacteria, viruses, and other pathogens that enter food through entirely preventable routes.

Good food hygiene does not require specialised knowledge. It requires understanding a small number of key principles and applying them consistently. This guide covers those principles in practical terms.

The Temperature Danger Zone

Most food-poisoning bacteria multiply rapidly in the temperature range between 8 and 63 degrees Celsius, sometimes called the danger zone. The key principles of food safety are about keeping food either below this range (refrigeration and freezing) or above it (thorough cooking), and minimising the time food spends in between.

Refrigerators should be set between 1 and 5 degrees Celsius. Above 8 degrees, bacterial multiplication begins to accelerate. Check your fridge temperature with a fridge thermometer, as many domestic refrigerators are not set correctly. Freezers should be at minus 18 degrees or below. Food frozen at the correct temperature does not go off microbiologically, though quality and texture can deteriorate over time.

Never leave cooked food at room temperature for more than two hours. Cool it quickly (within 90 minutes) before refrigerating, rather than refrigerating it hot which can raise the temperature of the fridge and risk other foods. Do not repeatedly reheat food: reheat once and to a temperature throughout that kills bacteria (at least 70 degrees Celsius at the centre).

Understanding Use-By and Best Before Dates

Use-by dates and best before dates serve different functions and are frequently confused, leading to unnecessary food waste on one hand and genuine food safety risks on the other.

Use-by dates appear on foods that are microbiologically perishable and become unsafe after the stated date, regardless of how they look or smell. These include fresh meat, fish, and dairy products. Do not eat these foods after the use-by date, even if they seem fine. Pathogenic bacteria that are present in dangerous quantities are not always detectable by smell or appearance.

Best before dates relate to quality rather than safety. Foods past their best before date may be less pleasant in taste, texture, or appearance but are typically still safe to eat. Dried foods, tinned goods, and frozen foods carry best before rather than use-by dates for this reason.

Cross-Contamination

Cross-contamination, the transfer of pathogens from one food or surface to another, is responsible for a significant proportion of food poisoning cases. The most important areas to manage are raw meat and poultry, which routinely carry bacteria including salmonella and campylobacter, and their contact with ready-to-eat foods.

Use separate chopping boards for raw meat and other foods. Wash hands, surfaces, and utensils immediately after contact with raw meat. Store raw meat in the bottom of the fridge in a sealed container, below and away from ready-to-eat foods. Never use the same plate for raw and cooked meat without washing it in between.

Eggs can carry salmonella externally even when intact. Wash hands after handling raw eggs, and cook eggs thoroughly for young children, older adults, and pregnant women unless they carry the British Lion stamp, which indicates vaccination against salmonella.

Hand Hygiene

Hands are the most common vector for pathogen transfer in kitchen environments. Wash hands thoroughly with soap and warm water for at least twenty seconds before preparing food, after handling raw meat or poultry, after touching the bin, after going to the toilet, after handling pets, after blowing your nose, and after handling raw eggs.

Hand sanitiser is not a substitute for handwashing in kitchen contexts. It reduces viral load but does not remove physical contamination or kill all bacterial pathogens as effectively as soap and water.

Food Poisoning: When to Seek Help

Symptoms of food poisoning include nausea, vomiting, diarrhoea, stomach cramps, and fever. They typically develop between one and 36 hours after eating contaminated food and resolve within a few days without treatment in most cases. The primary risk is dehydration, particularly in young children and older adults. Maintain fluid intake with water and oral rehydration solutions.

Seek medical attention if symptoms are severe (high fever, blood in stools, signs of dehydration that cannot be managed at home, severe abdominal pain), if a young child, older adult, pregnant woman, or immunocompromised person is affected, or if symptoms have not improved after 48 to 72 hours. Seek emergency help if someone becomes confused or loses consciousness.

Report suspected food poisoning from a food business to your local authority environmental health team, particularly if you think others may have been affected. This allows investigations that can prevent further cases.