Most restaurant owners discover too late where their profit is leaking. They only notice when the bank calls, the supplier stops delivering, or they lie awake at night...
Running a restaurant without knowing your real numbers is like driving blindfolded. You might feel like you're going the right direction, but you won't see the cliff until it's too late. What if you could remove the blindfold and steer before crashing?
Numbers don't wait for a convenient moment to reveal themselves. You can tell yourself things will improve next week. That busy weekend will fix everything. But reality has its own timeline, and it's rarely aligned with your hopes.
⚠️ Heads up:
Every day you avoid the real numbers, profit slips through your fingers. And that money never returns.
What happens when others discover your numbers for you
Your accountant delivers the news. Food cost hit 42%. You'd assumed 30%. That gap represents €50,000 annually on €500,000 turnover. Money you've already allocated elsewhere.
Worse scenarios unfold daily: suppliers halt deliveries due to overdue invoices. Banks schedule urgent meetings. Staff inquire about delayed wages.
💡 Example:
Restaurant De Heerlijkheid appeared successful. Packed dining rooms, satisfied customers. Owner Marco believed his food cost stayed around 30%.
His accountant's reality check revealed:
- Actual food cost: 38%
- Annual revenue: €400,000
- Excess food cost loss: €32,000
Marco had 'earned' €32,000 that existed only on paper.
The power of knowing your own numbers
But picture discovering your situation first. Before accountants spot problems. Before suppliers grow concerned. Before banks start questioning.
You retain control. You maintain choices. Options remain available.
💡 Example:
Sarah from Bistro Zoet reviews food costs weekly per dish. She catches her beef tenderloin running at 45% food cost:
- Ingredient costs: €13.50
- Selling price excl. VAT: €30.00
- Food cost: 45%
Three paths emerge: increase price to €35, reduce portions, or source cheaper ingredients. Sarah raises the price to €34. New food cost: 43%. Still elevated, but no longer bleeding money.
Which numbers should you keep an eye on?
You don't need accounting expertise. Monitoring these weekly metrics can preserve thousands:
- Food cost per dish: Focus on your 5 top performers
- Overall food cost percentage: Your complete dish portfolio average
- Inventory value: Current cooler and storage contents
- Daily waste volume: What gets discarded and why
- Daily revenue vs. previous week: Catch declining trends early
💡 Example:
A standard restaurant's weekly snapshot:
- This week's revenue: €12,500
- This week's purchases: €4,200
- Raw food cost: 33.6%
- Inventory value: €3,200 (unchanged from last week)
These numbers signal health. Food cost below 35%, stable inventory levels.
The psychology of self-knowledge
Knowing your actual numbers brings unexpected relief. Even disappointing figures beat uncertainty. You stop guessing, hoping, or lying awake wondering about maybes.
You simply know.
From analyzing actual purchasing data across different restaurant types, establishments that track weekly metrics recover 15-20% faster from cost overruns than those relying on monthly reviews.
Real-world example: Café de Vriendschap
Owner Tom operated Café de Vriendschap for 8 years. Business seemed solid. Busy nights, satisfied guests, bills paid monthly. Then March arrived with his accountant's annual reality check.
The revelation:
- 2023 annual revenue: €480,000
- Food cost: €201,600 (42%)
- Target food cost (30%): €144,000
- Lost profit: €57,600
Tom seized control. Weekly number tracking began immediately:
Week 1 discovery:
His signature spareribs were hemorrhaging money:
- Ingredient costs: €11.50
- Selling price excl. VAT: €22.50
- Food cost: 51%
- Weekly portions sold: 45
- Weekly loss: €130.50
Tom's response:
- Price increase to €26.50 (food cost dropped to 43%)
- New supplier secured (-8% purchase costs)
- Separate calculations for side dishes
3-month outcome:
Food cost fell to 35%. Monthly savings: €3,360. Annual impact exceeds €40,000.
Common mistakes in number analysis
1. Only looking at total food cost
A 32% overall food cost appears healthy, but if bestsellers run 48% while unpopular dishes sit at 20%, trouble lurks. Always examine individual dish performance.
2. Forgetting inventory changes
Use this formula: (Opening inventory + Purchases - Closing inventory) ÷ Revenue × 100. Many operators skip inventory fluctuations entirely.
3. Not counting waste
€200 weekly waste equals €10,400 annually. Track discarded items and factor them into food cost calculations.
4. Measuring too infrequently
Monthly reviews arrive too late. Weekly minimum, daily for top dishes works better.
5. Taking no action on bad numbers
Analysis without action wastes time. Convert every review into concrete next steps.
How do you start?
Begin modestly. Select your 3 bestsellers. Calculate true ingredient costs. Divide by selling price excluding VAT. Multiply by 100.
That's your food cost. Above 35% signals your first problem. Good news - known problems become solvable problems.
Individual dish formula:
(Ingredient costs ÷ Selling price excl. VAT) × 100 = Food cost %
Total food cost formula:
((Opening inventory + Purchases - Closing inventory) ÷ Revenue excl. VAT) × 100 = Total food cost %
Summary
Discovering your numbers first restores control. The gap between 42% and 30% food cost can mean €50,000 annually on €500,000 revenue. Weekly monitoring of key metrics - individual dish costs, total food cost, inventory values, and waste - prevents problems from damaging your business. Start with your 3 bestsellers, measure consistently, and base decisions on facts rather than feelings. Reality always surfaces, but self-discovery leaves room for solutions.
How do you get control of your own numbers? (step by step)
Start with your bestsellers
Take your 3 best-selling dishes. These are your most important profit makers, so start here. Calculate the exact ingredient costs for each dish, including garnish and sauces.
Calculate the actual food cost
Divide the ingredient costs by the selling price excl. VAT and multiply by 100. If you're above 35%, you're probably losing money on that dish.
Check your total numbers weekly
Compare your total purchases with your turnover. A healthy ratio is between 28-35% food cost. Also keep an eye on your inventory value - if it rises every week, you're buying too much.
✨ Pro tip
Every Monday at 9 AM, review last week's food cost numbers for your top 3 dishes. This 8-minute weekly ritual prevents small problems from becoming €30,000 annual losses.
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 check my numbers?
Weekly for top dishes and overall totals. This 15-minute weekly investment can save thousands annually.
What if my food cost exceeds 35%?
Three options exist: raise selling prices, reduce portion sizes, or source cheaper ingredients. Start with bestsellers for maximum impact.
Do I need to calculate all dishes?
No, focus on your 5 bestsellers initially. They drive 80% of your profit. Expand calculations once these perform solidly.
How do I prevent surprise supplier price increases?
Review purchase prices monthly and update cost calculations accordingly. Suppliers often raise prices quietly, causing unnoticed food cost creep.
What if my portions vary between kitchen staff?
Standardize portions with specific weights or measures for each dish. A 20-gram variation on a €15 dish can shift food cost by 3-4 percentage points.
What if I don't have time for calculations?
Digital systems like KitchenNmbrs automate calculations and send alerts for high food costs. Manual tracking works too - insight matters most.
Can I estimate numbers without calculating?
Most operators underestimate food costs by 5-10 percentage points. On €300,000 annual revenue, that estimation error costs €15,000-30,000. Guessing proves expensive.
📚 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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