I used to think a packed dining room meant money in the bank. Every night we'd turn tables twice, reservations booked solid for weeks. But somehow my profit margins kept shrinking while I celebrated another "successful" service.
Why your gut feeling misleads you
Your kitchen runs like clockwork. Full house. Sold out every night. Reservations are hard to get. And yet, at the end of the month there's nothing left. How is that possible?
The problem lies in hidden costs you don't see right away. Your gut says: "Lots of guests = lots of profit." But the reality is more complex.
💡 Example:
Restaurant with 80 covers per evening, 6 days a week:
- Revenue per evening: €2,400
- Gut feeling: "We're doing great!"
- Reality: food cost 38%, staff 35%, fixed costs 25%
- Profit: only 2% = €48 per evening
Per month: €1,248 profit on €62,400 revenue
The hidden profit leaks
There are five main reasons why your gut feeling differs from your bank account:
1. Oversized portions
Your chef serves 250 grams of steak instead of the calculated 200 grams. Per portion you lose €2.40 on meat. At 50 portions per week this costs you €6,240 per year.
2. No control over trim loss
You buy whole salmon for €18/kg. Due to trim loss (head, bones, skin) you're actually paying €32/kg for the fillet. But you still calculate with €18 in your cost price.
⚠️ Watch out:
With 45% trim loss, €18/kg salmon actually becomes €32.73/kg fillet. If you still calculate with €18, you lose €14.73 per kilo in profit.
3. Prices not adjusted for inflation
Your supplier raised beef prices 15% last year. You didn't raise your menu price. Every steak you sell now costs you more than expected.
4. Waste you don't count
Food goes in the trash daily. Unsold daily specials, failed preparations, expired products. This doesn't register in your gut feeling, but it shows up in your costs. I've seen restaurants lose €200-400 monthly just from untracked waste - a mistake that quietly drains profit while owners focus on front-of-house success.
💡 Waste example:
€25 in daily waste seems small, but:
- Per day: €25
- Per week (6 days): €150
- Per year: €7,800
That's almost an extra monthly salary going in the trash
5. Staff costs creep up unnoticed
Extra hours, overtime, sick leave coverage. These costs pile up without you feeling them directly in the daily rush.
Why revenue is misleading
Many entrepreneurs focus on revenue. "We did €8,000 today!" But revenue says nothing about profit.
The formula is simple: Profit = Revenue - All costs
The problem: you feel the revenue directly (packed restaurant, lots of checks), but costs are spread out and less visible.
💡 Example of misleading revenue:
Two restaurants, both €500,000 annual revenue:
- Restaurant A: 30% food cost, 30% staff, 25% fixed costs = 15% profit (€75,000)
- Restaurant B: 38% food cost, 35% staff, 25% fixed costs = 2% profit (€10,000)
Same revenue, €65,000 difference in profit
The role of food cost in your profit feeling
Food cost is the percentage of your selling price that goes to ingredients. It's often the biggest profit leak, but also the least visible.
Food cost % = (Ingredient costs / Selling price excl. VAT) × 100
A typical food cost for restaurants is between 28% and 35%. If you go above 35%, you're probably not earning enough.
How to get a clear picture of reality
Stop guessing and start measuring. These numbers give you the real situation:
- Food cost per dish: What do the ingredients really cost?
- Average check value: Is this going up or down?
- Number of covers: More guests or higher checks?
- Daily waste: How much goes in the trash?
- Actual purchase prices: Including trim loss and waste
⚠️ Watch out:
Always calculate with prices excluding VAT. The price on your menu is including 9% VAT. €32.00 incl. VAT = €29.36 excl. VAT for your calculations.
From gut feeling to numbers
Your gut feeling is important for the atmosphere in your restaurant, but numbers determine your survival. The combination of both makes you a better entrepreneur.
Start small: check the food cost of your 5 most popular dishes. Add up all ingredients, including garnish, sauce and oil. Divide this by your selling price excluding VAT.
Many entrepreneurs use tools like a food cost calculator to do these calculations automatically, so they have time for what they love most: making guests happy.
How do you get insight into your real profit?
Check your food cost on top dishes
Add up all ingredient costs of your 5 best-selling dishes. Including garnish, sauces and oil. Divide this by your selling price excluding VAT and multiply by 100.
Measure daily waste for one week
Note each day what gets thrown away and why. Add up the value. This gives you insight into hidden costs your gut feeling doesn't register.
Compare revenue with actual costs
Take an average week and add up all costs: purchases, staff, rent, energy. Subtract this from your revenue. The result is your real profit, not your gut feeling.
✨ Pro tip
Track your weekend food costs every Tuesday morning for 4 weeks straight. Weekend service generates 60% of most restaurants' revenue, so if those numbers are off, your monthly profit disappears fast.
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
Why does my restaurant feel profitable while my bank account says otherwise?
You feel the revenue directly (packed restaurant), but costs are spread out and less visible. Hidden profit leaks like oversized portions, waste and rising purchase prices you don't see right away.
How can I make a loss with a packed restaurant?
A packed restaurant means high revenue, but not automatically profit. If your food cost is above 35% and your staff and fixed costs together are 60%, you're left with only 5% profit.
What if my food cost comes out above 35%?
Then you're probably losing money on that dish. Check your portion sizes, calculate trim loss correctly and consider a price increase or recipe adjustment.
📚 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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