Definition of Potentially Hazardous Foods
Potentially hazardous foods (PHFs) are foods that must be kept at specific temperatures to prevent the growth of harmful bacteria that can cause foodborne illness. According to Food Authority NSW and Health Victoria, PHFs are those that require temperature control because they have characteristics—such as high moisture, low acidity, and high protein content—that support the rapid growth of bacteria or toxin formation if stored improperly.
Why These Foods Are Considered Hazardous
The risk factors that make foods potentially hazardous include:
- Moisture content (high water activity encourages bacteria growth)
- Protein content (provides nutrients for bacteria)
- Low acidity (foods with pH above 4.6 are more prone to contamination)
Bacteria like Salmonella and Listeria thrive in such conditions, posing serious food safety risks.
Australian Legal Framework and Food Classifications
Australian food safety laws, including those in NSW and Victoria, mandate that PHFs be handled according to the Australia New Zealand Food Standards Code (Standard 3.2.2). State agencies classify foods and set guidelines for storage, preparation, and service to reduce food poisoning risk.
Examples of Potentially Hazardous Foods
Meat, Poultry, and Seafood
- Raw and cooked meats (beef, lamb, pork)
- Poultry (chicken, turkey)
- Fresh and cooked seafood (fish, prawns, oysters)
These foods are high in protein and moisture, making them ideal for bacterial growth if left in the danger zone.
Dairy Products
- Milk and cream
- Soft cheeses (ricotta, brie, camembert)
- Custards and desserts containing cream
Dairy must be kept refrigerated below 5°C to prevent spoilage and bacterial contamination.
Cooked Vegetables and Grains
- Cooked rice and pasta
- Cooked potatoes
- Steamed vegetables
These foods provide nutrients and moisture that can support bacterial growth when stored improperly.
Foods Containing Eggs or Protein-Rich Fillings
- Quiches
- Sandwiches with egg-based fillings
- Hollandaise sauce
These items are associated with Salmonella risk if not handled correctly.
Ready-to-Eat and Pre-Packaged Items
- Sushi
- Deli meats
- Pre-made salads
These foods are ready for consumption and can easily be cross-contaminated if not stored and handled properly.
Temperature Control Requirements for PHFs
The Temperature Danger Zone Explained
PHFs must not be kept between 5°C and 60°C, known as the danger zone, for extended periods. Bacteria multiply rapidly in this range, increasing the risk of foodborne illness.
Cooling and Reheating Guidelines
- Cool hot food from 60°C to 21°C in two hours, then to 5°C in the next four hours.
- Reheat food quickly to at least 60°C before serving.
Cold and Hot Storage Best Practices
- Fridges: 5°C or colder
- Freezers: -15°C or colder
- Hot holding (e.g., bain-marie): 60°C or hotter
Handling Potentially Hazardous Foods Safely
Receiving and Inspecting Deliveries
Check:
- Temperature upon delivery
- Packaging integrity
- Use-by dates
Avoiding Cross-Contamination
- Use colour-coded cutting boards
- Wash hands frequently
- Clean and sanitise surfaces
- Use separate utensils for raw and cooked foods
Food Preparation Do’s and Don’ts
✅ Keep foods out of the danger zone
✅ Prepare PHFs in small batches
❌ Do not leave PHFs unrefrigerated
❌ Avoid refreezing thawed PHFs
Who Is Responsible for Managing PHFs?
Food Handlers’ Responsibilities
Food handlers must:
- Follow safe practices
- Monitor food temperatures
- Prevent cross-contamination
- Complete appropriate food handling training
Employer and Business Obligations
Businesses must:
- Provide proper training
- Maintain accurate records
- Ensure equipment functions correctly
- Pass food safety audits
Training and Certification for Safe Food Handling
Food Handler and Supervisor Certification
In most states, including VIC, NSW, and QLD:
- Food handlers require basic food safety training
- Supervisors often need a higher-level certificate
Accessing Accredited Training in Australia
Training can be obtained through:
- TAFEs
- Accredited private providers (e.g. online courses from recognised bodies)
- Industry associations
Common Misconceptions About Hazardous Foods
PHFs Are Not Always Dangerous
PHFs only pose a risk when not stored or handled correctly. With proper temperature control, they are safe to consume.
Natural or Organic Foods Can Also Be Hazardous
Even natural or organic PHFs (e.g., free-range eggs, raw milk) can support bacterial growth.
Why Understanding PHFs Matters in the Workplace
Impacts on Public Health
Foodborne illnesses affect thousands of Australians each year, often linked to mishandled PHFs.
Workplace Safety and Legal Compliance
Following PHF guidelines helps businesses:
- Pass inspections
- Avoid fines
- Protect staff and customers
FAQ
What qualifies as a potentially hazardous food?
Any food that supports the rapid growth of bacteria or toxin production without temperature control.
Why do some foods need to be kept cold or hot?
To prevent bacterial growth that could cause food poisoning.
What is the danger zone in food safety?
The temperature range between 5°C and 60°C where bacteria multiply quickly.
Is bread a potentially hazardous food?
No, bread is not typically classified as hazardous as it does not support rapid bacterial growth.
Can you leave cooked rice out overnight?
No, cooked rice left out can develop dangerous levels of bacteria or toxins.
How long can food be in the danger zone?
Ideally, no more than 2 hours in total.
Who decides if food is hazardous in Australia?
State and federal food safety authorities, guided by the Australia New Zealand Food Standards Code.
Do I need a certificate to handle hazardous foods?
Yes, appropriate food handling certification is usually required in food service roles.
Are eggs always considered hazardous?
Egg-based dishes are considered PHFs due to salmonella risk, but whole eggs are not hazardous unless cracked or cooked improperly.
How do I know if my workplace is following food safety laws?
Check that staff are trained, equipment is maintained, and food safety plans are in place.
Final Notes
Potentially hazardous foods play a major role in food safety across Australia’s hospitality, retail, and food service sectors. Understanding and managing PHFs is essential to protect public health and comply with legal requirements. Training, such as food handling certification, helps ensure food is safe from preparation to service.
