Semi-finished products make cost price calculation more complex because you don't just count the purchase price, but also the processing costs and yield. Many kitchens use...
Semi-finished products complicate cost price calculations because you can't just count the purchase price - you need processing costs and yield too. Many kitchens rely on pre-baked rolls, frozen vegetables, or ready-made sauces. The actual cost price often exceeds expectations because processing requirements get overlooked.
What are semi-finished products in cost price calculation?
Semi-finished products are ingredients that have undergone partial processing but aren't guest-ready. Examples include:
- Pre-baked rolls needing final baking
- Frozen vegetables requiring cooking
- Ready-made sauces needing heating and seasoning
- Cut meat requiring marinating and grilling
- Pre-portioned fish needing preparation
⚠️ Watch out:
Many operators calculate only the purchase price of semi-finished products. But you're also using energy, time, and often additional ingredients to complete them.
The complete cost price of semi-finished products
For accurate calculations, combine these elements:
- Purchase price semi-finished product (supplier cost)
- Additional ingredients (spices, oil, butter, garnish)
- Energy costs (oven, fryer, cooktop)
- Preparation losses (shrinkage, evaporation)
- Labor time (optional but realistic)
💡 Example:
Pre-baked hamburger roll:
- Purchase price roll: €0.45
- Finishing bake (oven 3 min): €0.08
- Extra sesame seeds: €0.02
- Butter for shine: €0.03
True cost price: €0.58 (29% above purchase price)
Yield and loss with semi-finished products
Semi-finished products experience losses during final preparation - the kind of thing you only learn after closing your first month at a loss:
- Shrinkage: Meat drops 15-25% weight during cooking
- Evaporation: Sauces reduce by 10-15%
- Breakage: Pre-baked items break during finishing
- Overbaking: Failed portions requiring redoing
💡 Example:
Frozen chicken fillet (pre-marinated):
- Purchase price: €12.00/kg
- Grilling shrinkage: 20%
- Actual yield: 800g per kg
- Real price per kg: €12.00 / 0.80 = €15.00/kg
Plus energy and oil for grilling: roughly €15.50/kg total
Comparison: homemade vs semi-finished product
Sometimes semi-finished costs more than homemade, sometimes less. Calculate both scenarios:
💡 Example comparison:
Homemade mayonnaise:
- Ingredients: €2.20 per liter
- Chef labor (15 min): €3.75
- Total: €5.95 per liter
Ready-made mayonnaise:
- Purchase price: €4.80 per liter
- Immediately ready
- Total: €4.80 per liter
Semi-finished saves €1.15 per liter
Documentation and tracking
Maintain detailed records for semi-finished products:
- Supplier and product code (traceability purposes)
- Shelf life (often shorter after opening/thawing)
- Preparation method (temperature, timing, extra ingredients)
- Allergens (often incompletely listed on packaging)
- True cost price (including processing expenses)
⚠️ Watch out:
Semi-finished products often harbor 'hidden' allergens. Pre-marinated chicken might contain celery or mustard. Always verify the complete ingredient list.
Systems like KitchenNmbrs allow you to record complete cost prices for semi-finished products, including processing expenses and yield calculations. This provides a realistic view of actual dish costs.
How do you calculate the cost price of dishes with semi-finished products?
Gather all cost components
Note the purchase price of the semi-finished product, all extra ingredients you add (spices, oil, butter), and estimate the energy costs for preparation. Also add any garnish or decoration that comes with the dish.
Calculate the yield after preparation
Measure how much you have left after preparation. Meat shrinks 15-25%, sauces can reduce. Divide the purchase price by the yield percentage to get the actual price per kilo.
Add up all costs for the total cost price
Calculate the actual price per kilo × portion size + extra ingredients + energy costs. This is your actual cost price per portion. Optionally compare with making it yourself to see what's more economical.
✨ Pro tip
Review your top 8 semi-finished products every 6 weeks to compare against homemade costs. Raw material and semi-finished prices often move inversely, making the economical choice shift unexpectedly.
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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
Should I include energy costs in the cost price of semi-finished products?
Absolutely, especially for items requiring extended oven time or high energy usage. A pre-baked pizza needing 12 minutes at 220°C costs roughly €0.15 in energy. With high volumes, this accumulates significantly.
How do I calculate labor time with semi-finished products?
Use your chef's hourly wage divided by 60, then multiply by preparation minutes. A chef earning €15/hour spending 5 minutes on a dish represents €1.25 in labor costs.
Are semi-finished products always pricier than homemade?
Not necessarily. With smaller volumes, semi-finished often proves more economical since you avoid preparation time and reduce waste risk. Calculate both options for certainty.
How do I track allergens in semi-finished products?
Always examine the complete ingredient list on packaging. Semi-finished items frequently contain hidden allergens like celery in spices or mustard in marinades. Document all 14 EU allergens per product.
📚 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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