Too many restaurant owners buy cheese by the block but have no clue what each portion actually costs them. That €15 block might seem reasonable until you realize you're only getting 8 portions from it. Here's how to calculate your true cheese cost per portion.
Why portion pricing actually matters
You can't manage what you don't measure. A €15 block of cheese feels affordable, but if you only get 8 portions from it, you're paying €1.88 per portion – and that's before accounting for waste.
⚠️ Watch out:
Most kitchen staff eyeball cheese portions instead of weighing them. This creates oversized portions and kills your margins faster than you'd think.
The actual formula you need
Here's the math, but don't forget cutting waste:
Portion price = (Block price / Net weight) × Portion weight
Net weight = Gross weight - Cutting waste (rind, scraps)
💡 Example:
You buy aged cheese: 2.5 kg block for €32.50
- Gross weight: 2.5 kg
- Cutting waste (rind): 150 grams
- Net weight: 2.35 kg
- Target portion: 40 grams
Real price per kilo: €32.50 / 2.35 kg = €13.83/kg
Your portion cost: €13.83 × 0.04 kg = €0.55 per portion
Cutting waste varies by cheese type
Different cheeses = different waste percentages. Here's what you're actually losing:
- Hard cheeses (aged, parmesan): 5-8% waste
- Soft cheeses (brie, camembert): 15-25% waste
- Pre-sliced cheese: 0-2% waste
- Standard blocks (young, semi-aged): 3-6% waste
💡 Brie example:
1 kg brie wheel for €18.00
- Rind waste: 20% = 200 grams
- Usable cheese: 800 grams
- True cost per kilo: €18.00 / 0.8 kg = €22.50/kg
30-gram portion costs: €22.50 × 0.03 = €0.68
Portion sizes depend on usage
Your cheese portion changes based on the dish:
- Main course cheese board: 80-120 grams
- Dessert cheese selection: 50-80 grams
- Meat garnish: 25-40 grams
- Sauce or quiche ingredient: 15-30 grams
- Pasta topping: 20-35 grams
⚠️ Watch out:
Track your actual portions for one week. Based on real restaurant P&L data, kitchens typically serve 20-30% larger portions than planned, destroying food cost targets.
Menu costing in practice
Calculate cheese costs for every dish that uses it:
💡 Menu example:
Steak with gorgonzola - menu price €28.00
- Gorgonzola block 1.5 kg: €24.00
- Cutting waste: 10% = 150 grams
- Net cheese: 1.35 kg = €17.78/kg
- Steak portion: 35 grams
Cheese cost: €17.78 × 0.035 = €0.62 per portion
Add meat, vegetables, and sauce costs to see your total food cost
Digital tools speed up calculations
Manual calculations eat time and create errors. Food cost calculators like KitchenNmbrs automatically compute your cheese costs per portion once you input block prices and portion weights. You'll instantly see how cheese affects your dish profitability.
How do you calculate cheese per portion? (step by step)
Weigh the cheese block and note the purchase price
Weigh your cheese block precisely and note the purchase price. For example: 2.2 kg aged cheese for €28.60. This becomes your starting point for all calculations.
Determine the cutting waste from rind and scraps
Cut the cheese and weigh the waste (rind, damaged pieces). Subtract this from the gross weight to get your net weight. For hard cheeses this is usually 5-8%.
Calculate the actual price per kilo
Divide the purchase price by the net weight. For example: €28.60 / 2.05 kg = €13.95 per kilo of usable cheese. This is your actual price per kilo.
Multiply by your portion weight
Determine how many grams of cheese you use per dish and multiply by the price per kilo. For 40 grams: €13.95 × 0.04 = €0.56 per portion.
✨ Pro tip
Install a small digital scale at your cheese station and weigh every portion for 10 days straight. You'll discover your real portion costs and likely find you're serving 25-40% more cheese than your recipes call for.
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
Do I always need to include cutting waste in the calculation?
Yes, always account for waste. Cutting waste increases your real cost per usable kilo. Skip this step and you'll underestimate costs while overestimating profits.
How much cutting waste does pre-grated cheese have?
Pre-grated cheese has almost zero waste (0-2%). You pay more per kilo but save labor and eliminate waste. Calculate which option actually saves money.
What if my kitchen staff gives inconsistent portions?
Weigh actual portions going out for one full week, then use that average in your calculations. Most kitchens serve 20-30% larger portions than planned, which kills your food cost targets.
📚 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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