I'll admit something most restaurant owners discover the hard way. Your sales are climbing, but profit margins keep shrinking. The culprit? You're unknowingly pushing dishes that barely make you money.
The warning signs hiding in your financials
Your numbers tell a story before your accountant does. If overall food costs creep upward while supplier prices stay flat, you've got a menu mix problem. Three red flags should catch your attention:
- Food cost percentage jumps (say, from 29% to 34%)
- Average ticket size drops despite serving more guests
- Sales climb while profit stagnates
💡 Example:
Last month:
- Revenue: €45,000
- Overall food cost: 31%
- Average bill: €28.50
This month:
- Revenue: €48,000 (+7%)
- Overall food cost: 35% (+4 percentage points)
- Average bill: €26.80 (-6%)
Diagnosis: You're selling more, but cheaper dishes with higher food cost.
Break down your menu performance
Time to play detective with your top sellers. Pull your 10 most popular dishes and crunch these numbers for each one:
- Food cost percentage: (Ingredient costs / Selling price excl. VAT) × 100
- Absolute margin: Selling price excl. VAT - Ingredient costs
- Units moved this month
💡 Example analysis:
Top 3 dishes this month:
- Pasta carbonara: 45% food cost, €11.20 margin, 180x sold
- Caprese salad: 25% food cost, €8.90 margin, 160x sold
- Steak: 32% food cost, €18.50 margin, 85x sold
Problem: Your most popular dish has 45% food cost - way too high.
Here's something most kitchen managers discover too late: one popular dish with terrible margins can sink your entire month's profit. You might think volume makes up for it, but the math rarely works out.
Calculate your actual profit drain
That high-cost dish isn't just underperforming—it's actively costing you money. Here's how much:
Monthly loss = (Actual food cost% - Target food cost%) × Selling price excl. VAT × Units sold
⚠️ Note:
Always calculate with the selling price excluding VAT. For restaurants, that's usually the menu price divided by 1.09.
💡 Impact calculation:
Pasta carbonara example:
- Selling price: €16.50 incl. VAT = €15.14 excl. VAT
- Actual food cost: 45%
- Target food cost: 30%
- Difference: 15 percentage points
- Sold: 180 portions
Monthly loss: 0.15 × €15.14 × 180 = €408.78
Annually: €4,905 lost on one dish!
Your fix-it toolkit
Once you've spotted the profit killers, you've got three moves:
- Bump the price: Take that pasta from €16.50 to €18.50
- Trim portions: 20 grams less pasta saves €0.50 per plate
- Source smarter: New supplier or substitute ingredients
The sweet spot? Combine all three. A modest price bump + slightly smaller portions + better sourcing can drag that 45% food cost down to 30%.
Track your mix weekly
Don't let this happen again. Monitor which dishes are trending each week. If those profit-draining plates start climbing the popularity charts, act fast. Push your high-margin winners through daily specials or server suggestions.
Tools like KitchenNmbrs show you instantly which dishes drive real revenue, so you can pivot before your menu mix tanks your bottom line.
How do you analyze your menu mix? (step by step)
Create an overview of your 10 best-selling dishes
Check your POS system or receipts and count how many of each dish you've sold this month. Focus on your top sellers - they determine your profit.
Calculate the food cost and margin per dish
Add up all ingredient costs and divide by your selling price excl. VAT. Also calculate your absolute margin: selling price minus ingredient costs.
Identify the profit killers
Dishes with food cost above 35% and high sales volume are your biggest problem. Calculate how much profit you lose per month on these dishes.
✨ Pro tip
Pull your sales data every 2 weeks and rank your top 8 dishes by units sold. If any dish above 50 units has food costs over 35%, you're bleeding €200+ monthly on that item alone.
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 percentages should I target for different dish types?
Main courses should hit 28-35%, appetizers 25-30%, desserts 20-28%. Pasta and pizza can often run leaner at 20-25%, while meat and fish typically need 30-35%. These ranges give you room for ingredient price fluctuations.
How often should I analyze my menu mix performance?
Run a quick popularity check weekly to spot trends early. Do full food cost analysis monthly, or bi-weekly if you're seasonal. Summer beach spots or ski lodges should check more frequently since customer preferences shift fast.
What if my signature dish has terrible margins but customers love it?
Don't axe it—fix it. Raise the price gradually (€1-2 increments), shave portions slightly, or find cheaper ingredient sources. Often a combo approach works without alienating customers who expect that dish.
📚 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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