73% of restaurants operate with outdated menu prices while supplier costs have increased by an average of 18% over the past year. Your menu displays prices you set months ago, but suppliers have quietly bumped their rates multiple times since then. You believe you're pricing competitively while your food costs have silently ballooned, eroding margins without warning.
Why this spiral happens so frequently
It begins innocuously. Your supplier drops a note: "Due to rising costs, we're implementing an 8% price increase effective March 1st." You shrug: "8% isn't catastrophic." So you do... absolutely nothing.
Three months pass, another hike arrives. This time 12%. Again, you leave your menu untouched. "It's just temporary," you rationalize. "Prices will normalize on their own."
Plot twist: they never do.
💡 Example: Steak gets more expensive
January 2023: Entrecote €24/kg, your menu price €32.00
- January: Food cost €24/kg → 200g costs €4.80
- July: Food cost €28/kg → 200g costs €5.60
- December: Food cost €32/kg → 200g costs €6.40
Your menu price: still €32.00
Food cost jumped from 20% to 27% while you weren't watching.
The silent margin massacre
A 20% bump in food costs seems manageable. But watch what it actually does to your food cost percentage:
- Food cost was 28%? Now it's 33.6%
- Started at 30%? You're looking at 36%
- Was 32%? Welcome to 38.4%
Cross the 35% food cost threshold and you're hemorrhaging money on every plate. And this happens while your dining room stays packed and everything appears rosy.
💡 Example: The real loss
Restaurant with 100 covers per day, 6 days per week:
- 31,200 covers per year
- Average food cost increase: 5 percentage points
- Average check value: €35 excl. VAT
Loss: €54,600 per year from ignoring price adjustments
Why it flies under your radar
From tracking this across dozens of restaurants, three patterns emerge that mask the problem:
- Revenue hypnosis: Your business hums along nicely, registers keep ringing. But you're not monitoring what actually remains after costs.
- Staggered supplier increases: Meat prices spike first, then seafood, later produce. You never see the complete picture at once.
- Mental price lag: Your brain still calculates that steak at €4.80. Reality check: you're now paying €6.40.
⚠️ Note:
Many owners fear: "Raise prices and customers vanish." But with excessive food costs, you lose money on every customer who walks through your door. Better to serve fewer guests with healthy margins than pack the house while bleeding cash.
How you stop this madness
The fix is straightforward: audit your food costs monthly. Not revenue. Not covers. Food costs.
For your 5 top-selling dishes:
- Calculate total ingredient costs (using today's purchase prices)
- Divide by your selling price excl. VAT
- Multiply by 100 for the percentage
Any dish hitting above 35%? Time for action. Bump the selling price, trim portion sizes, or source cheaper alternatives.
💡 Example: Quick check
Carbonara on your menu for €18.50 incl. VAT:
- Selling price excl. VAT: €18.50 / 1.09 = €16.97
- Current ingredient costs: €6.20
- Food cost: (€6.20 / €16.97) × 100 = 36.5%
Red alert! Price needs to hit €20.50 or ingredient costs must drop to €5.10
Digital tools make the difference
Manual calculations eat up precious time. And time is what you don't have. That's why smart operators use systems like a food cost calculator to automate this tracking.
You input current purchase prices, and the system instantly calculates food costs per dish. Supplier bumps their prices? You immediately spot which dishes have become unprofitable.
This prevents months of silent profit bleeding.
How do you check if your prices are still correct? (step by step)
Gather current purchase prices
Get your latest supplier invoices and note the current prices of your main ingredients. Not what you think it costs, but what you actually pay. Check this for your 5 best-selling dishes.
Calculate ingredient costs per portion
Add up all ingredient costs for each dish: main ingredient, garnish, sauce, oil, butter. Use the current purchase prices from step 1. Don't forget anything that goes on the plate.
Calculate your food cost percentage
Divide the ingredient costs by your selling price excluding VAT and multiply by 100. Does a dish come in above 35%? Then you're losing money and need to adjust your price.
✨ Pro tip
Track your top 3 dishes weekly instead of monthly during high-inflation periods. A 2-week delay in catching cost spikes can drain €3,000+ from a busy kitchen.
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 audit my food costs?
Monthly minimum for your top-selling dishes. Suppliers adjust prices regularly, so last month's calculations might already be obsolete. Set a recurring calendar reminder for the first Tuesday of each month.
What if my food cost exceeds 35%?
You've got three moves: increase your selling price, shrink portion sizes, or source cheaper ingredients. Doing nothing guarantees you lose money on every single plate that leaves your kitchen.
Should I check every dish or focus on popular items?
Start with your 5 best-sellers since they drive the biggest profit impact. Master those and you've tackled 80% of your margin problem. You can expand from there once you've got the system down.
Can I just estimate ingredient costs instead of calculating exactly?
Estimating fails almost every time. Suppliers bump prices frequently and your memory doesn't account for all the small ingredients that add up to significant costs. Precision beats guesswork every time.
📚 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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