Your semi-finished products cost 40-70% more than you think after processing. That €3.50 pre-baked pizza actually costs €5.75 once you add energy, labor, and extra ingredients. Most restaurant owners discover this gap only after their first unprofitable month.
Why semi-finished products cost more than their sticker price
Every semi-finished item needs additional work before it reaches your customer. Those extra steps pile up costs fast.
- Energy costs for oven, fryer or grill
- Labor time for finishing, garnishing, plating
- Extra ingredients like sauce, vegetables, herbs
- Packaging and presentation
⚠️ Watch out:
Many kitchens only calculate with the purchase price of the semi-finished product. Then your food cost looks much lower than it actually is.
Calculate your true cost per portion
Add every processing expense to your base purchase price. This reveals what you're actually spending per dish – the kind of thing you only learn after closing your first month at a loss.
💡 Example:
Pre-baked margherita pizza:
- Semi-finished product: €3.50
- Extra mozzarella: €0.80
- Fresh basil: €0.30
- Oven energy costs (8 min): €0.25
- Labor time (3 min at €18/hour): €0.90
Real cost price: €5.75
Quick energy cost estimates
Energy's usually the trickiest part to pin down. But you can use these rough calculations for most equipment:
- Pizza oven (250°C): €0.03/minute
- Fryer (180°C): €0.04/minute
- Grill/salamander: €0.02/minute
- Combi-oven: €0.035/minute
💡 Example:
Frozen fries in fryer:
- Fries (200g): €0.85
- Frying oil (5g): €0.15
- Fryer energy (4 min): €0.16
- Labor time (1 min): €0.30
Real cost price: €1.46 (was €0.85)
Don't forget labor costs
Two minutes of work still costs money. Calculate using your kitchen staff's full hourly rate, including employer contributions and benefits.
Labor time formula:
Labor cost = (Processing time in minutes / 60) × Hourly wage incl. contributions
💡 Example:
Salad garnish on pre-packaged burger:
- Burger semi-finished product: €2.80
- Lettuce, tomato, onion: €0.60
- Special sauce: €0.25
- Grill energy (3 min): €0.06
- Labor for garnishing (2 min at €18/hour): €0.60
Real cost price: €4.31
How this affects your bottom line
The gap between purchase price and actual cost can wreck your food cost percentages. Focus on your highest-volume semi-finished items first – that's where the biggest losses hide.
⚠️ Watch out:
With 100 pizzas per week with €2.25 difference between purchase price and real cost price, you lose €11,700 per year in uncalculated costs.
How do you calculate the real cost price of a semi-finished product?
Write down the purchase price of the semi-finished product
Start with the price you pay your supplier per piece or per kilo. This is your base price, but not yet your real cost price.
Add up all extra ingredients
Make a list of everything you add: sauces, vegetables, herbs, garnish. Calculate what this costs per portion.
Calculate energy and labor time
Estimate how many minutes you process the product and which equipment you use. Calculate €0.03 per minute for ovens and €0.30 per minute for labor time.
Add everything together
Purchase price + extra ingredients + energy costs + labor time = real cost price. Use this for your food cost calculation.
✨ Pro tip
Start with your 3 highest-volume semi-finished items and track them for 2 weeks. You'll spot the biggest cost gaps fast and can fix 60% of your hidden losses in under a month.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
How do I know how much energy my oven uses?
Check the power rating on the nameplate (for example 3kW) and multiply by your energy price per kWh. As a rule of thumb: €0.03 per minute for a standard pizza oven.
What if I use different semi-finished products mixed together?
Then calculate the cost price per semi-finished product separately and add them up. For example: pizza base + pre-packaged toppings each have their own cost price.
How often should I update this calculation?
Check at least every 3 months whether the purchase prices are still correct. Recalculate immediately if suppliers raise prices.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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