Most restaurant owners think their profit problems come from rising rent and wages. But here's what they miss: the biggest money leaks often happen right in their own kitchen, hidden in daily decisions they actually control. External costs grab attention because they arrive on bills, while kitchen losses slip away unnoticed.
Why we blame external factors
It's human nature to look for problems outside yourself. Rent, wage costs, and taxes make perfect scapegoats because they're concrete and visible. You get that €4,000 rent bill monthly. You see minimum wage increases. Tax assessments arrive in your mailbox.
These costs feel uncontrollable - and that's partly true. You can't just change them overnight. But here's the trap: entrepreneurs spend energy worrying about things they can't influence while overlooking what they can actually control.
💡 Example:
Restaurant with €50,000 monthly revenue complains about a €200 rent increase. Meanwhile:
- Food cost is 38% instead of 30% = €4,000 too much per month
- Portions are 20% too large = €2,500 too much per month
- No control over waste = €800 too much per month
Total controllable: €7,300 vs. €200 rent increase
The hidden costs in your kitchen
While you stress about that €4,000 rent payment, much more money often bleeds away through daily kitchen choices. The problem? These costs don't arrive with invoices attached.
Oversized portions
Your chef serves 250 grams of steak while you're pricing for 200 grams. Each portion loses €3.20. At 200 steaks monthly that's €640 - just because nobody's watching.
No food cost control
Your supplier raised salmon prices 18% last year. You never adjusted menu prices. Every salmon dish now costs €2.80 extra. At 150 portions monthly: €420 pure loss.
Waste from poor planning
Weekly you toss €180 worth of vegetables because you over-ordered. That's €9,360 yearly - more than two months' rent.
⚠️ Note:
These losses often exceed the external costs you worry about. But since they're not itemized on bills, they stay invisible.
Why kitchen costs remain invisible
Kitchen costs hide in hundreds of small daily decisions. Extra butter here, additional garnish there, slightly bigger portions, spoiled ingredients. Most kitchen managers discover this too late - after months of wondering why profits stay flat despite busy nights.
External costs arrive neatly documented:
- Rent: €4,000 per month
- Wages: €18,000 per month
- Insurance: €650 per month
But kitchen costs? You only see them if you actively measure and track. Most entrepreneurs don't, so these losses stay hidden.
💡 Example:
Bistro with 80 covers daily discovered after measurement:
- Food cost actually 35% instead of estimated 28%
- Difference: 7 percentage points on €40,000 monthly revenue = €2,800 per month
- That's €33,600 per year - enough for an extra chef
The psychological aspect
There's also psychology at play here. Complaining about rent and taxes feels safer than admitting you lack kitchen control. External factors aren't "your fault" - internal ones are.
But this mindset costs money. Every day spent focusing on uncontrollable expenses instead of manageable ones means missed opportunities.
Uncontrollable:
- Rent (unless you relocate)
- Union-negotiated wages
- Tax rates
- Energy prices (mostly)
Controllable:
- Portion sizes
- Food cost per dish
- Waste levels
- Menu composition
- Purchasing decisions
The impact of shifting focus
What happens when you redirect attention from external to internal factors? You often discover more influence than expected.
💡 Example:
Restaurant first focused on lowering rent (impossible). Then on kitchen control:
- Food cost from 36% to 31% = €2,500 per month
- Waste cut in half = €400 per month
- Better menu composition = €800 per month
Total: €3,700 monthly extra - without paying one euro less rent
What you can actually influence
Instead of fixating on unchangeable costs, focus on what's actually within your control:
Daily checks
Monitor your 3 top-selling dishes daily. Are portion sizes correct? Ingredients still fresh? How much got discarded?
Weekly numbers
Calculate food costs for bestsellers weekly. Suppliers constantly adjust prices. If you don't update menu pricing, profits shrink.
Smart purchasing
Avoid over-buying. Fresh products that spoil hit you twice: you paid for them and can't sell them.
A food cost calculator helps organize this control without consuming much time. You'll spot money leaks immediately and adjust quickly.
How do you get control of controllable costs? (step by step)
Measure your actual food cost
Calculate what the ingredients actually cost for your 5 best-selling dishes. Add everything up: main ingredient, garnish, sauce, oil, butter. Divide by your selling price excl. VAT and multiply by 100.
Check your portion sizes
Weigh your portions of your top dishes for a week. Are they bigger than what you're calculating for? Every extra gram of meat or fish costs money. Communicate the correct portions clearly to your kitchen.
Track waste
Note for a week what gets thrown away and why. Bought too much? Poor planning? Spoilage from wrong storage? This gives you concrete points to save money.
✨ Pro tip
Track your 3 bestsellers' actual portions versus recipe specs for 14 days straight - you'll likely find 15-25% variance costing you hundreds monthly. Most owners assume their portions are consistent without ever measuring.
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 do I know if my kitchen costs are too high?
Calculate your food cost percentage: ingredient costs divided by selling price excluding VAT, times 100. If this exceeds 35% for most dishes, you're likely losing money. Track your top 5 sellers weekly to spot trends early.
What if my chef resists being monitored?
Frame it as partnership, not surveillance. Explain that proper portions and reduced waste keep the business healthy, which secures everyone's job. Most chefs cooperate once they understand you're protecting their position, not questioning their skills.
Which kitchen costs have the biggest impact on profits?
Usually food cost from oversized portions or expensive ingredients, followed by waste from poor planning. Start with these two areas since they often account for 70% of controllable kitchen losses. Once mastered, tackle purchasing and menu engineering.
📚 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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