Every chef has their own version of the same recipe. One uses 200 grams of steak, another uses 250 grams. Nobody knows anymore what the real food cost actually...
I'll be honest: most restaurants are bleeding money without knowing it. Every chef tweaks recipes their own way - one uses 200 grams of steak, another uses 250 grams. The result? You're earning less than you think, and nobody realizes it's happening.
Most kitchens face food cost chaos from a few common culprits:
- Recipes only exist in people's heads - Every chef does it slightly differently
- Prices aren't updated - Suppliers raise prices, you're calculating with old ones
- Portion sizes vary - Today 180 grams of salmon, tomorrow 220 grams
- Nobody tracks cutting loss - You calculate with whole fish, but sell fillets
💡 Example:
Your most popular dish: steak with fries. Three different chefs, three different food costs:
- Chef A: 200g steak = €8.40 food cost
- Chef B: 230g steak = €9.66 food cost
- Chef C: 250g steak = €10.50 food cost
Difference per portion: €2.10. At 100 portions per week = €10,920 per year difference!
The problem of outdated prices
Suppliers bump their prices 2-4 times yearly. But most restaurants don't update their food cost calculations. The result: you're calculating with last year's prices while paying today's rates.
⚠️ Heads up:
Beef has jumped 18% more expensive over the past year. If you're still calculating with old prices, you're losing €3.60 per steak without knowing it.
Cutting loss: the hidden cost
Many teams calculate with purchase prices but forget cutting loss. You buy whole fish for €18/kg, but after filleting you only have 55% left. Your actual fillet price is therefore €32.73/kg.
💡 Example calculation:
Whole salmon: €18.00/kg, cutting loss 45%
Yield: 100% - 45% = 55%
Actual fillet price: €18.00 ÷ 0.55 = €32.73/kg
Difference: €14.73/kg more than expected
At 20 kg salmon per week: €294 in extra costs that nobody passes on.
Different portion sizes, different margins
If your chef gives 180 grams of salmon today and 220 grams tomorrow, your food cost varies from 28% to 34%. At a selling price of €32.00, that's €1.80 difference per plate.
The impact of seasons on food costs
Many restaurants forget that ingredient prices are seasonal. Tomatoes sometimes cost double in winter compared to summer prices. Asparagus is €8/kg in May and €24/kg in December. If you don't adjust your menu or update prices, your margin disappears.
A restaurant that sells the same salad all year for €12.50 sees the food cost vary from €3.20 in summer to €5.80 in winter. That means a margin of 74% versus 54% - a difference of €2.60 per salad.
Real-world example: Restaurant The Golden Spoon
Restaurant The Golden Spoon has 80 seats and does €750,000 per year. Their most popular dish is grilled sea bass with vegetables (€28.50). The problem: nobody knows the exact food cost.
The situation:
- Head chef calculates with whole sea bass at €16/kg
- Sous-chef already calculates with fillet price of €28/kg
- Owner is still using prices from 8 months ago
- Portion sizes vary between 160-200 grams
The reality:
Sea bass is now €18.50/kg, cutting loss is 42%, so fillet price = €31.90/kg. At 180 grams per portion, this means €5.74 just for the fish. With vegetables and garnish, the total food cost comes to €9.20.
The result:
At a selling price of €28.50, the margin is 67.7% instead of the expected 75%. On 2,500 portions per year, this means €4,150 less profit - enough to replace all kitchen equipment.
Common mistakes in food cost calculation
1. Forgetting indirect costs
Many teams only calculate with main ingredients but forget oil, spices, salt, bread. These 'small' costs add up to 8-12% of your total food cost.
2. Not passing on scraps
You buy 10 kg potatoes, but always throw away 500 grams due to peeling, shrinkage or spoilage. Your actual price is therefore 10.5% higher than the purchase price.
3. Forgetting portion costs
Dishes, cutlery, napkins, bread - costs that are incurred per portion but rarely included in the food cost calculation. On average €0.45 per plate extra.
4. Not accounting for waste
Not every dish that leaves the kitchen is actually sold. Returns due to complaints, wrong orders or accidents cost an average of 3-5% extra.
5. Ignoring labor costs
A dish that takes 45 minutes to prepare versus a dish that takes 10 minutes have different labor costs. At €20/hour cooking costs, this makes a difference of €11.67 per portion.
What this costs you
The combination of these factors means your food cost is 3-8 percentage points higher than you think. From tracking this across dozens of restaurants, I've seen annual turnover of €500,000 translate to €15,000 to €40,000 less profit.
💡 Calculation example:
Restaurant with €500,000 annual turnover:
Target food cost: 30%
Actual food cost due to chaos: 36%
Difference: 6 percentage points = €30,000 per year
Enough to hire an extra chef or increase your own salary.
How to solve this
The solution lies in standardization and one source of truth. All recipes, all prices, all portion sizes in one place. So everyone works with the same numbers.
Start by documenting all recipes with exact quantities. Update prices weekly and communicate changes directly to the entire team. Use scales to standardize portion sizes and calculate cutting losses realistically.
Train your staff to portion consistently and document work processes. This creates predictability in your food costs and therefore in your profitability.
Summary
Food cost chaos arises from lack of standardization: different portion sizes, outdated prices, forgotten cutting loss and recipes that only exist in people's heads. This can cost you 3-8% extra food cost - tens of thousands of euros less profit per year.
The solution lies in systematically documenting recipes, regularly updating prices, and ensuring one consistent way of working across your entire team. This transforms food cost chaos into predictable profitability.
How do you ensure one correct food cost?
Document all recipes with exact quantities
Write down what actually goes on the plate. Not 'a piece of steak' but '220 grams of ribeye'. Include all garnishes, sauces and oil.
Update purchase prices every month
Check your invoices and adjust prices. Calculate cutting loss into your actual price per kilo. Divide purchase price by yield percentage.
Make agreements about portion sizes
Discuss with your team what the standard portion is. Weigh occasionally to check if this is correct. A kitchen scale for €50 can save you thousands of euros.
✨ Pro tip
Weigh your top 3 dishes every Tuesday morning for 4 weeks straight. You'll discover portion creep happens faster than price increases - and it's costing you more than you think.
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 often should I update my food costs?
Check your purchase prices at least every month. Suppliers raise prices regularly, and you need to pass those costs on to your dishes.
What if my chef says he knows it?
Experience is valuable, but numbers don't lie. Have him track what he actually uses for a week. Often it's surprising.
Do I need to calculate all dishes?
Start with your 5 best-selling dishes. Those account for 80% of your profit. If those are correct, you've solved the biggest problem.
How do I factor cutting loss into my food cost?
Divide your purchase price by the yield percentage. At 40% cutting loss you have 60% yield: €20/kg ÷ 0.60 = €33.33/kg actual price.
What if different chefs use different quantities?
Make clear agreements and weigh occasionally. A portion scale helps you stay consistent.
Should I include prep time in my food cost calculations?
Absolutely - labor costs matter more than most realize. A sauce that takes 3 hours to make costs €15 in labor at €20/hour wages. Factor this into your pricing or you'll lose money on every plate.
📚 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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