Costing is the process of working out how much food will cost to make. In menu planning, it helps you compare dishes, calculate the cost of a portion and decide whether a menu is practical for its target customer. You may need to cost one recipe or a complete menu. The key is to use accurate quantities, consistent units and clear calculations. This guide explains recipe costing and portion costing in a way that supports revision for WJEC Level 1/2 Hospitality and Catering and AQA GCSE Food Preparation and Nutrition, while reminding you to follow your own board’s specification.
What does costing mean?
Costing means calculating the financial cost of the ingredients used in a dish. In a school food room, this usually means finding the ingredient cost for a recipe and then working out the cost of one portion.
Costing is part of menu planning because a menu must be suitable for its customer, occasion and budget. A dish might be nutritious and attractive, but it may not be suitable if the ingredients are too expensive or difficult to obtain. Costing can help a designer make sensible choices, such as using a seasonal ingredient, reducing waste or selecting a different portion size.
Recipe costing and portion costing
Recipe costing
Recipe costing is the total cost of all the ingredients used to make a recipe. Begin by listing every ingredient and the quantity required. Then find the cost of the quantity used, rather than automatically using the full price of a packet, bottle or tin.
For example, if a recipe uses part of a larger pack, calculate the cost of the amount used:
Cost of amount used = pack cost ÷ pack quantity × quantity used
The units must match. If the pack quantity is shown in grams, convert the recipe quantity to grams before calculating. If a liquid is listed in millilitres, use the pack quantity in millilitres. Do not mix kilograms with grams or litres with millilitres without converting first.
Portion costing
Portion costing is the cost of one serving. Once you have added the costs of all the ingredients, divide the total recipe cost by the number of portions produced:
Cost per portion = total recipe cost ÷ number of portions
For instance, if a recipe makes six equal portions, divide the total cost by six. If the recipe is changed to make a different number of portions, the ingredient quantities and the portion calculation must be checked again.
A reliable costing method
- Read the recipe carefully. Identify every ingredient and the quantity used.
- Record the purchase information. Note the pack size and the price shown in the costing information you have been given.
- Check the units. Convert measurements so that the pack quantity and recipe quantity use the same unit.
- Calculate each ingredient cost. Work out the cost of the amount used, including partial packs where necessary.
- Add the ingredient costs. This gives the total cost of the recipe.
- Check the yield. Yield means the number of portions the recipe produces. Divide the total recipe cost by this number.
- Round at the end. Keep calculator figures during the working and round the final answer as instructed by your teacher or examination question.
Worked calculation structure
A clear costing table makes your method easy to follow and helps you spot errors.
| Ingredient | Quantity used | Pack information | Cost of quantity used |
|---|---|---|---|
| Ingredient A | Recipe quantity | Pack size and pack cost | Pack cost ÷ pack size × quantity used |
| Ingredient B | Recipe quantity | Pack size and pack cost | Pack cost ÷ pack size × quantity used |
| Total recipe cost | Add all ingredient costs | ||
| Cost per portion | Total recipe cost ÷ number of portions | ||
This format is more useful than writing only a final answer because it shows the calculation process. It also makes it easier to correct one ingredient without starting again.
Common costing mistakes
- Using the whole pack price: If the recipe uses only part of a pack, calculate the cost of the quantity used.
- Forgetting an ingredient: Include small amounts such as oil, herbs, spices or stock if they appear in the costing information.
- Mixing units: Convert grams and kilograms, or millilitres and litres, before calculating.
- Dividing by the wrong yield: Use the number of portions the recipe actually makes, not the number of portions you intended to make.
- Rounding too early: Early rounding can make the final total inaccurate. Keep full calculator values until the final stage.
- Confusing cost with selling price: Ingredient cost is not automatically the same as the price charged to a customer.
Using costing in menu planning
Costing should be considered alongside other menu-planning factors. These can include the target customer, occasion, available equipment, time, skills, nutrition, portion size and dietary needs. A low-cost dish is not automatically the best choice if it does not meet the purpose of the menu.
In a commercial setting, a business may also consider labour, energy, rent and other overheads. Overheads are general running costs that are not easily linked to just one ingredient. However, do not add extra costs unless the question or your teacher asks you to. Read the wording carefully and identify whether it wants ingredient cost, portion cost, selling price or another calculation.
Teacher Tip: Ask yourself three questions after every calculation: “Have I used the amount required?”, “Are my units consistent?” and “Have I divided by the correct number of portions?” These checks catch many avoidable errors.
Exam-ready summary
- Recipe costing is the total cost of the ingredients used.
- Portion costing is the total recipe cost divided by the number of portions.
- For a partial pack, use: pack cost ÷ pack quantity × quantity used.
- Convert units before calculating.
- Check the recipe yield before finding the cost per portion.
- Keep working clear and round only as instructed.
- Use costing with menu-planning factors such as budget, customer, nutrition, equipment and time.
- Check your WJEC or AQA specification and the wording of the task because assessment requirements are not necessarily identical.
Further specification guidance
This explanation is designed for the shared menu-planning and costing content, but you should revise from the documents for your qualification. The WJEC Level 1/2 Hospitality and Catering specification and the AQA GCSE Food Preparation and Nutrition specification are official sources. Specifications and related guidance can change, so check the latest version supplied by the relevant board or your teacher.