Unprofitable dishes are silent profit killers. They appear successful on paper but quietly drain your margins every single day. Here's how to identify these hidden money drains and fix them fast.
The hidden profit killer on your menu
Your restaurant's packed every night. Guests leave happy, revenue keeps climbing. But your profit margins? They're shrinking, and you can't figure out why.
The culprit is often hiding in plain sight - dishes that seem popular but are actually bleeding money.
⚠️ Watch out:
Popularity doesn't mean profitability. Your best-selling dish could be your worst loss-maker.
Red flags that scream unprofitable dishes
These warning signs should make you nervous:
- Busy nights, disappointing deposits: Tables are full but your bank account isn't growing
- Kitchen staff getting generous with portions: "Quality service" becomes expensive habit
- Ingredient costs creeping up while menu prices stay frozen: Your margins vanish silently
- Plates coming back cleaner than ever: Oversized portions make guests happy but kill profits
💡 Example:
Your signature pasta sells 120 times monthly at €18.50:
- Selling price excl. VAT: €16.97
- Ingredient costs: €7.20
- Food cost: 42.4%
Monthly loss: €2.50 × 120 = €300
Focus where it matters most
Don't analyze your entire menu - that's overwhelming and unnecessary. Your top 5 bestsellers drive 80% of your revenue and determine if you're profitable or not.
For each dish, you need three numbers:
- Food cost percentage: (Ingredient costs / Selling price excl. VAT) × 100
- Monthly sales volume
- Total profit impact
One of the most common blind spots in kitchen management is ignoring how these top dishes interact with your overall profitability. Restaurants often obsess over low-selling items while their biggest revenue drivers leak money.
💡 Example top 5 analysis:
Restaurant with €40,000 monthly revenue:
- Steak: 35% food cost, 80 sold = €1,120 profit
- Pasta: 42% food cost, 120 sold = €300 loss
- Fish: 28% food cost, 60 sold = €720 profit
- Salad: 38% food cost, 40 sold = €80 loss
- Burger: 31% food cost, 100 sold = €800 profit
Net impact: €2,260 profit (pasta and salad drain €380/month)
The 15-minute profit audit
Skip the spreadsheets and complex formulas. This quick check reveals your biggest profit leaks immediately:
- Pull last week's sales report from your POS
- Identify your 3 top sellers
- Calculate total ingredient costs (don't forget garnish, sauces, cooking oil)
- Run the formula: costs / (menu price / 1.09) × 100
Anything above 35% is eating your profit. Above 40%? You're paying customers to eat your food.
⚠️ Watch out:
Always use prices EXCLUDING VAT. Menu prices include 9% VAT. Divide by 1.09 to get your actual selling price.
Four ways to fix profit-draining dishes
Once you've identified the problem dishes, you've got four options to stop the bleeding:
- Increase the price: Often the quickest fix
- Shrink portions: Same price, lower ingredient costs
- Substitute ingredients: Maintain quality while cutting costs
- Cut the dish entirely: For chronic money losers
💡 Example fix:
Pasta price increase from €18.50 to €21.50:
- New price excl. VAT: €19.72
- Ingredient costs remain: €7.20
- New food cost: 36.5%
From €300 monthly loss to €400 profit = €700 swing
Stay ahead with automated tracking
Manual calculations work, but they're time-consuming and easy to forget. Smart operators use automated tracking to monitor dish profitability continuously.
You'll instantly see:
- Real-time food cost per dish
- How supplier price changes affect margins
- Which dishes to push or revise
- Overall menu profitability
How to discover unprofitable dishes? (step by step)
Select your top 5 best-selling dishes
Get your till report from last month and note which 5 dishes were sold the most. These determine 80% of your profitability.
Calculate the exact ingredient costs
Add up all costs: main ingredients, garnish, sauces, oil, butter - everything that goes on the plate. Don't forget anything, not even the parsley as decoration.
Calculate food cost percentage per dish
Use the formula: (Ingredient costs / Selling price excl. VAT) × 100. Divide menu price by 1.09 to get the price excl. VAT.
Mark anything above 35% food cost as problematic
Dishes with food cost above 35% don't generate enough revenue. Above 40% you're actively losing money on each sold plate.
Calculate monthly impact
Multiply number sold per month by loss per portion. This shows your exact monthly leak in euros.
✨ Pro tip
Calculate your #1 and #2 bestsellers' food costs within 72 hours - these two dishes alone represent 50-60% of your profit potential. Focus here first.
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
What food cost percentage should I target?
Most successful restaurants maintain food costs between 28% and 35%. Anything above 35% starts hurting profitability, and above 40% means you're losing money on every sale.
Should I calculate food cost including VAT?
Never include VAT in food cost calculations. Always divide your menu price by 1.09 to get the price excluding 9% VAT. Including VAT makes your food costs appear artificially low.
What if my bestseller is unprofitable?
Don't panic - you have options. Try raising the price first since it's usually the fastest solution. If that's not possible, reduce portions or find cheaper ingredient alternatives.
How often should I audit my dish profitability?
Check your top 5 dishes monthly at minimum. Supplier prices change frequently, and small increases can devastate margins if left unchecked for months.
📚 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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