Frozen foods must be kept at or below what temperature to stay safe?
Alberta Food Handler: Temperature control
Cold holding at 4 °C or less, hot holding at 60 °C or more, the danger zone, frozen food, shell eggs and seafood, the two-hour room temperature rule and thermometers.
- No sign-up
- Every answer explained
- Independent · not a government site
- 16 questions
- Topic drill
Study reference: Alberta food safety law (Oct 2026), Ch. 3 Temperature control — Food Regulation s. 18, 25; Food Code s. 3.3.1 to 3.3.3, 3.3.8, 4.1.11, 4.1.12
All 16 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Frozen foods must be kept at or below what temperature to stay safe?
- 10 °C
- 4 °C
- 7 °C
- 0 °C
What must be marked on potentially hazardous food held at room temperature for service?
- The time it was removed from temperature control
- The price per portion shown to the customer
- The date the ingredients were first delivered
- The name of the cook who prepared it earlier that day
Why should food thermometers not have glass stems?
- Glass reads temperatures too slowly
- Glass thermometers are more costly
- Broken glass could contaminate food
- Glass cannot measure frozen foods
At what temperature must whole raw shell eggs be stored?
- 7 °C or colder
- 12 °C or colder
- 4 °C or colder
- Room temperature
Who may approve storage temperatures different from 4 °C and 60 °C for high-risk food?
- An executive officer (health inspector)
- Any customer who asks
- The cook who is on shift at the time
- The food supplier
At a temporary food stall, how must the operator check storage and cooking temperatures?
- By asking customers if the food is hot
- With probe and cold-storage thermometers
- By timing the food with a kitchen clock
- By touching the food quickly with freshly washed hands
What freezer temperature does the Food Code give to maintain the quality of frozen food?
- −18 °C or colder
- −8 °C or colder
- −2 °C or colder
- −40 °C or colder
What temperature range does the Food Code call the "danger zone"?
- 10 °C to 40 °C
- 60 °C to 74 °C
- 0 °C to 4 °C
- 4 °C to 60 °C
A salad was prepared and cooled to be served cold later. Where must it be held?
- In a hot-holding unit at 60 °C
- At room temperature to keep it crisp
- At 10 °C, since it is only vegetables
- At 4 °C or colder until it is served
Under Alberta's Food Regulation, high-risk food kept cold must be at what temperature?
- 0 °C exactly
- 10 °C or colder
- 4 °C or colder
- 7 °C or colder
Food Code temperatures refer to which temperature of the food?
- The surface temperature of the container
- The internal temperature, unless the food is frozen
- The temperature of the air inside the fridge or freezer
- The temperature shown on the oven dial
A tray of sandwiches sits at room temperature for immediate service. How long may it stay out?
- No more than 2 hours, then it must be thrown out
- Up to 4 hours, then it can go back in the fridge
- As long as the sandwiches still look and smell fresh
- Up to 6 hours if the room is air-conditioned
How accurate must temperature measuring devices be under the Food Code?
- Within ±1 °C in the operating range
- Accuracy does not matter if read often
- Within ±10 °C at any temperature
- Within ±5 °C in the operating range
At what temperature must seafood be stored under the Food Code?
- 10 °C
- 3.3 °C
- 7 °C
- 5 °C
What must every refrigerator and hot-holding unit in a commercial kitchen have?
- A glass door
- A digital clock
- An accurate thermometer
- A lock and key
Hot food held for service must stay at what temperature?
- 50 °C or hotter
- 40 °C or hotter
- 45 °C or hotter
- 60 °C or hotter
Temperature control: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
s. 25 Storage, display and transportation
- High-risk food must be stored, displayed and transported at 4 °C or colder, or at 60 °C or hotter, unless a health inspector (executive officer) approves other temperatures.
- Food that must be frozen to stay fit to eat must stay frozen while stored, displayed, packaged or transported.
- Whole raw shell eggs must be kept at 7 °C or colder.
s. 18 Equipment
- Refrigeration and hot-holding equipment must be big enough for the establishment, able to keep the required temperatures and fitted with an accurate thermometer.
s. 3.3 Temperature control
- All temperatures are internal product temperatures unless the product is frozen.
- Frozen foods must be kept at 0 °C or colder; −18 °C or colder keeps their quality.
- All potentially hazardous food, including food prepared and cooled to be served cold, is stored at 4 °C or colder; seafood at 3.3 °C.
- Hot food is held at 60 °C or hotter.
- The temperature "danger zone" is between 4 °C and 60 °C; the time food spends in it affects safety and shelf life.
- Potentially hazardous food meant for immediate consumption may be held at room temperature (not on ice) for no more than 2 hours, then must be thrown out; it must be marked with the time it was taken out of temperature control.
s. 4.1.11 and 4.1.12 Thermometers
- Equipment that cooks, cools, stores or freezes potentially hazardous food needs devices to monitor and control temperature.
- Thermometers must be easy to read, accurate to ±1 °C and calibrated regularly, with calibration records kept.
- Food thermometers should not have glass sensors or stems unless in a shatterproof sleeve.
s. 42 (temporary food establishments)
- Probe thermometers and cold-storage thermometers must be used to check storage and preparation temperatures.
Other topics
- Alberta food safety law and trainingFood handling permits, the Food Regulation's training requirement by number of food handlers, exempt premises, recognized courses, displaying the permit, plan approval and permit suspension or cancellation.
- Foodborne illness and high-risk foodsWhat makes a food potentially hazardous, examples of high-, medium- and low-risk foods, contamination, people most at risk, and the bacteria the Food Code highlights.
- Thawing, cooking, cooling and reheatingSafe thawing methods, minimum internal cooking temperatures, two-stage cooling, reheating to 74 °C, microwave cooking and freezing fish for parasites.
- Receiving and storing foodApproved and unapproved food sources, inspecting deliveries, what to reject, keeping invoices and seafood tags, refrigerator order, storing chemicals and other non-food items.
- Preventing contamination and allergensKeeping raw and ready-to-eat food apart, no bare-hand contact, washing produce, protecting self-serve food, tasting spoons, re-serving food, returned food and the priority food allergens.
- Personal hygiene and illnessThe Food Regulation's duties for food handlers, when and how to wash hands, hair restraints, aprons, jewellery, smoking, illness symptoms that keep you off food work, wounds and visitors.
- Cleaning and sanitizingWritten sanitation procedures, the steps of cleaning, sanitizer strengths, the three-compartment sink, dishwasher temperatures, wiping cloths, slicers, cutting boards and single-service items.
- Pests, premises and equipmentKeeping premises free of pests, pest-control records, corrective action, insect devices, garbage, building and handwashing station requirements, equipment surfaces and animals in food premises.
- Special events, community functions and home foodTemporary food establishments at special events, community organization functions, bed and breakfasts and low-risk home-prepared food sold under Alberta's Food Regulation.