What do meat, fish, poultry and eggs give us in the diet, how are they classified, and how must they be cooked and stored to be safe?
Meat, fish, poultry and eggs as a food commodity group: their nutritional value as HBV protein foods, classification, working characteristics such as protein coagulation, the functions of eggs, and safe cooking and storage of these high-risk foods.
A focused answer to the WJEC Food Preparation and Nutrition commodity group on meat, fish, poultry and eggs, covering their value as HBV protein, classification, working characteristics, the many functions of eggs, and the safe cooking and storage of these high-risk foods.
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What this dot point is asking
You need to know what meat, fish, poultry and eggs provide in the diet, how they are classified, how they behave in cooking (their working characteristics), the many functions of eggs, and how to cook and store these high-risk foods safely.
What this group gives us in the diet
These foods are the body's main source of high biological value (HBV) protein, which contains all the essential amino acids and is used for growth and repair. They also supply:
- iron (especially red meat) for healthy red blood cells, plus zinc,
- B vitamins, including B12, which is found mainly in animal foods,
- in oily fish (salmon, mackerel, sardines), omega-3 fatty acids for a healthy heart and vitamin D,
- vitamin A and iron in eggs.
The advice is to choose lean cuts and to grill or bake rather than fry, to reduce saturated fat, and to eat two portions of fish a week, one of them oily.
How this group is classified
- Meat: red meat (beef, lamb, pork) and offal (liver, kidney).
- Poultry: chicken, turkey, duck.
- Fish: white fish (cod, haddock), oily fish (salmon, mackerel) and shellfish (prawns, mussels).
- Eggs: usually hen's eggs, sold by size and graded for quality.
Working characteristics
Protein coagulation. When meat, fish and eggs are heated, the protein coagulates (sets): it changes from soft and translucent to firm and opaque. This is why egg white turns from clear to white, and why fish becomes firm and flakes. Overcooking makes meat and fish dry and tough as the protein tightens and squeezes out moisture.
Browning (Maillard reaction). The surface of meat browns when seared or roasted, developing flavour and colour through a reaction between proteins and sugars at high temperatures.
The functions of eggs
Eggs are one of the most versatile ingredients in the kitchen:
- Aeration: whisked egg traps air to make a foam (meringues, whisked sponges).
- Coagulation: sets when heated to thicken and set dishes (quiche, custard).
- Binding: holds a mixture together (burgers, fishcakes).
- Emulsification: helps oil and water mix and stay mixed (mayonnaise).
- Glazing: brushed on pastry for a shiny golden finish.
- Enriching and thickening: adds colour, flavour and nutrients to sauces.
Safe cooking and storage
These are high-risk foods because they support the growth of harmful bacteria such as salmonella and campylobacter.
- Cook thoroughly to a core temperature of at least 75 degrees Celsius; check poultry with a probe, and that juices run clear with no pink meat.
- Store in the fridge below 5 degrees Celsius, raw meat and poultry on the bottom shelf so they cannot drip onto ready-to-eat food.
- Keep raw and cooked foods separate and use different chopping boards to avoid cross-contamination.
- Defrost frozen meat fully in the fridge before cooking, and never refreeze raw food once thawed.
Exam-style practice questions
Practice questions written in the style of WJEC exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
WJEC style6 marksEggs are described as a very useful ingredient. Explain four different functions of eggs in cooking, giving an example dish for each.Show worked answer →
A 6-mark question. Award marks for correctly named functions with suitable examples (about four functions for full marks).
Eggs aerate: whisked egg white traps air to make a foam, used in meringues and whisked sponges. Eggs coagulate (set when heated), which thickens and sets dishes such as quiche, custard and scrambled egg. Eggs bind ingredients together, holding a mixture so it does not fall apart, for example in burgers or fishcakes. Eggs emulsify, helping oil and water mix and stay mixed, as in mayonnaise. Eggs also glaze, brushed on pastry to give a shiny golden finish.
A top answer names the function, explains briefly what it does, and gives a correct example dish for each. Reward precise terms: aeration, coagulation, binding, emulsification and glazing.
WJEC style4 marksExplain why chicken must be cooked thoroughly and how you would check that it is cooked.Show worked answer →
A 4-mark question on food safety.
Raw chicken often carries harmful bacteria such as salmonella and campylobacter, which can cause food poisoning. Cooking it thoroughly to a high enough temperature for long enough kills these bacteria and makes it safe to eat. You can check it is cooked by using a temperature probe to confirm the centre has reached at least 75 degrees Celsius, and by checking that the juices run clear and there is no pink meat in the thickest part.
Markers reward: raw chicken carries harmful bacteria that cause food poisoning; thorough cooking kills them; and a check such as a probe reading of 75 degrees Celsius, clear juices and no pink meat. The core temperature is the most reliable check.
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Sources & how we know this
- WJEC Eduqas GCSE Food Preparation and Nutrition specification (from 2016) — WJEC Eduqas (2016)