Food Studies and Culinary Skills
What this domain tests
This domain examines food commodities, food processing and preservation, culinary techniques, sensory analysis and food safety. Questions often ask you to explain why a technique works, not just describe it, and to apply food-safety rules to a kitchen scenario.
Core rules and concepts
- The temperature danger zone is 5–63°C; bacteria multiply fastest in warm conditions. Refrigerate at 0–5°C, freeze at −18°C or below, and cook poultry and reheat leftovers to at least 75°C.
- Freezing inhibits bacteria; it does not kill them. Thaw food in the fridge, not at room temperature.
- HACCP is a seven-principle food-safety system based on identifying hazards and controlling critical points. The FSAI is the Irish body that oversees food safety.
- Heat causes starch to gelatinise, protein to coagulate, sugars to caramelise and amino acids plus sugars to brown via the Maillard reaction.
- Moist-heat methods include boiling, steaming and stewing; dry-heat methods include baking, grilling and frying.
Worked example
A student makes a white sauce by melting 25 g butter, stirring in 25 g flour, then adding 250 ml milk all at once. The sauce is lumpy and tastes floury. Explain the faults and the correction.
The flour must be cooked in the roux before liquid is added, and the milk should be added gradually while whisking. Starch granules need water and heat to swell and release amylose, which thickens the sauce. Adding all the milk at once can trap lumps of starch, and undercooking leaves a raw-flour taste. The correction is to cook the roux briefly, add the milk in stages, whisk continuously and simmer until the starch is fully gelatinised.
Traps that cost marks
Do not confuse caramelisation (sugar only) with the Maillard reaction (sugar plus protein). Do not claim freezing sterilises food. In sensory analysis, use separate descriptors for appearance, aroma, taste and texture rather than writing “taste” for everything.
Key points
- Danger zone 5–63°C; cook to 75°C; freeze at −18°C.
- HACCP prevents hazards rather than testing finished food.
- Gelatinisation thickens sauces; coagulation sets protein foods.
- Add liquid gradually to a roux to avoid lumps.
- Freezing preserves by slowing growth; it is not a sterilising step.