Food processing cost: yield, batches and the things that happen between them
Costing a processed food product across all ten categories. Raw material loses weight at every step, and the costs between batches — cleaning, changeover, testing — belong to the batch, not to the piece.
Two things make food costing different from every trade covered so far. Raw material **loses weight at every step**, so what you buy and what you sell are different quantities of different things. And a lot of real cost happens **between batches** rather than during them.
Miss either one and the arithmetic still works — it just describes a factory that does not exist.
The ten categories, in production order
1. Raw material — as purchased, not as sold
Charge the quantity **received into the process**, not the quantity in the finished pack. Trim, peel, bone, evaporation and drip loss were all bought and paid for.
Ingredients, additives and seasonings are separate lines at their own prices; minor ingredients are often expensive per unit weight, which makes "minor" misleading.
2. Machine time
Preparation, thermal processing, filling, sealing, labeling. Rate per machine, converted per unit by the batch it processes. Include the energy-intensive steps explicitly — thermal processing is usually the largest energy consumer in the plant.
3. Labor
Production labor, plus two blocks that are easy to omit: cleaning between batches, and the time spent gowning and moving through hygiene controls. Both are real, both scale with batch count rather than with output.
4. Consumables — wearing and single-use
Blades, filters, belts, sieves — cost divided by units produced between changes. Plus single-use items: gloves, hairnets, cleaning chemicals, sanitizer. Single-use consumables are the ones shops forget because they never appear in the product.
5. Scrap — off-spec and expired are not the same thing
Product that fails specification is production scrap and belongs here. Product that expired in the warehouse is **not** — that is an inventory and planning loss, and putting it here makes the process look defective when the process was fine.
Recording them together points the whole plant at the wrong problem. Note the cause when you enter it.
6. Rework
Product reprocessed into another batch, or downgraded to a lower-value line. Where regulation or spec forbids rework, enter zero rather than leaving it blank.
7. Outside processing
Contract processing, cold storage, laboratory testing, irradiation. Vendor price per lot divided by units, plus transport — including refrigerated transport, which is a large cost, not a rounding error.
8. Packaging
Primary pack, labels, outer carton, pallet, and any modified atmosphere or desiccant. Packaging is a big share in this trade and it is often the largest cost line after raw material for low-value products.
9. Freight
Cost of a shipment divided by units, at the temperature the product requires. A chilled or frozen lane costs substantially more than an ambient one, so record which one the figure assumes.
10. Plant overhead
Refrigeration, hygiene, water and effluent treatment, pest control, certification and audits. This trade carries compliance costs that most others do not, and they have nowhere else to go — leaving them out is the quiet way a food cost ends up understated.
Three checks
- Raw material is quantity received, not quantity in the pack.
- Cleaning and changeover are costed per batch, not spread as if they were per unit.
- Expired stock is separated from production scrap, with the cause noted.
Related guides
- Processing yield multiplies, it does not add
Losses at each step compound, so a series of small losses is much larger than their sum. How to measure the whole chain with two numbers you already have, and where giveaway hides.
- Cleaning and changeover: cost per batch, not cost per unit
Cleaning between batches costs the same whether the batch was large or small — which is what really makes short runs expensive. How to cost it, and what it tells you about batch sizing.
- Is the saving real? Bottlenecks, and the three ways a number becomes money
Why speeding up a machine usually saves nothing, when a number on a costing sheet turns into cash, and how to tell real cash savings apart from cost avoidance before anyone in finance asks.