Many restaurant owners believe that busy tables equal healthy profits - but that's simply not true. You can serve 200 covers a night and still struggle to pay bills. The real measure of success isn't how many guests you serve, but how much profit each guest leaves behind.
Where does your money disappear in a full restaurant?
Packed dining rooms create an illusion of success. But profit doesn't come from busyness - it comes from what remains after all costs. Here's where most restaurants bleed money:
💡 Example: Restaurant with 80 covers per evening
Revenue: €2,400 per evening (€30 average bill)
- Food cost 38%: €912
- Staff: €720
- Rent and fixed costs: €480
- Other costs: €240
Profit: €48 (2% of revenue)
At 6 days per week: €288 per week profit on €14,400 revenue.
The biggest profit leaks in full restaurants
These problems hide in plain sight, slowly draining your margins while you're focused on serving guests:
Portions that are too generous
Your chef plates 250 grams of steak instead of the budgeted 200 grams. That extra 50 grams costs you €3.60 per steak. Serve 25 steaks weekly and you're losing €4,680 annually on one dish alone.
⚠️ Watch out:
Most kitchens lack portion control standards. Each cook eyeballs quantities differently, making food costs unpredictable and uncontrollable.
No control over cutting waste
You purchase whole salmon at €18 per kilo, but cutting waste means you're actually paying €32 per kilo for usable fillet. Calculate with the purchase price and you'll miss €14 per kilo in true costs.
💡 Example: Salmon cutting waste
Whole salmon: 2 kg for €36
- After filleting: 1.1 kg usable fillet
- Cutting waste: 45%
- Actual fillet price: €36 / 1.1 kg = €32.73/kg
If you calculate with €18/kg, you're missing €14.73 per kilo
Prices not adjusted for cost increases
Your beef supplier increased prices 15% last year, but your menu prices stayed the same. Every steak sold now erodes your margins further.
No insight into real food cost per dish
Too many owners guess at ingredient costs instead of calculating them precisely. That "€8 dish" often costs €11 once you account for every component.
💡 Example: Hidden costs pasta carbonara
What you see: pasta €0.80, bacon €2.20, egg €0.40, cheese €1.60 = €5.00
What you forget:
- Butter for the pan: €0.35
- Olive oil: €0.25
- Spices and pepper: €0.15
- Bread on the side: €0.80
- Parsley garnish: €0.20
Actual cost price: €6.75 (35% higher!)
Why this goes wrong so often
You're not failing as a business owner. The issue is lacking systems to track these critical details. After managing kitchen operations for nearly a decade, I've seen the same patterns repeat:
- No time for Excel - You're running service, not crunching numbers
- Prices change constantly - Suppliers adjust weekly, but tracking falls behind
- Different cooks, different portions - Without standardized recipes, consistency disappears
- Waste isn't measured - What hits the bin never gets counted
The solution: control your numbers
You don't need complex systems, just clear visibility into actual costs. Start with these three actions:
1. Calculate food cost on your 5 top-selling dishes
Include every ingredient - garnishes, sauces, accompaniments. Divide total cost by selling price excluding VAT. Above 35%? You're losing money.
2. Establish standard portion sizes
200 grams means exactly 200 grams. Not 180, not 250. Train your team to maintain consistency across all shifts.
3. Update pricing with cost fluctuations
Review supplier pricing monthly. Adjust menu prices before increased costs eat your profits.
⚠️ Watch out:
A packed restaurant with thin margins is riskier than a quieter spot with healthy profits. You'll work twice as hard for half the return.
Many operators use tools like KitchenNmbrs to automatically monitor food costs and identify profitable dishes without manual calculations.
How do you discover where your profit is leaking? (step by step)
Calculate your real food cost
Choose your 3 best-selling dishes and add up all ingredient costs - including garnish, sauces, oil and bread. Divide this by your selling price excluding VAT and multiply by 100 for the percentage.
Check your portion sizes
Weigh the portions coming out of your kitchen for a week. Note any deviations from your standard recipes. Calculate how much extra this costs per month.
Measure your waste
Track for 5 days what gets thrown away and why. Add up the value of spoiled products, over-purchased food and rejected plates. This gives you insight into avoidable losses.
✨ Pro tip
Track food cost percentages on your 7 highest-volume dishes every 2 weeks. These dishes drive 70% of your ingredient spending, so controlling them fixes most profit leaks quickly.
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 can I be profitable with fewer guests?
Focus on average spend per guest and food cost percentages. Serving 50 guests at €35 average with 28% food cost beats 80 guests at €25 average with 38% food cost. Quality over quantity drives profitability.
What is a healthy food cost for a full restaurant?
Most successful restaurants maintain food costs between 28-33%. Full restaurants can absorb slightly higher fixed costs, but ingredient costs must stay controlled. Above 35% and you're likely losing money on every plate.
How often should I adjust my prices?
Review supplier pricing quarterly at minimum. For major increases over 10%, adjust immediately. Smaller increases can wait for seasonal menu updates, but don't let costs outpace revenue for months.
What if my competitors are cheaper?
Competitors might have better purchasing power, smaller portions, or operate at losses temporarily. Focus on your own margins and ensure every dish generates profit rather than matching unsustainable pricing.
How do I prevent portions from becoming too large?
Establish clear standards and train consistently - 200g steak means exactly 200g. Use scales during busy periods if needed. Regular portion audits prevent costly drift over time.
Should I focus on food cost or labor cost first?
Start with food cost on your top 5 dishes since it's easier to control immediately. Labor optimization takes longer but food cost improvements show results within weeks of implementation.
📚 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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