Your bestselling dishes might be silently draining your profits while your dining room stays packed. Most operators assume popularity equals profitability, but that's often far from reality. The dishes flying out of your kitchen could be the very ones destroying your bottom line.
Why your top dishes can ruin you
Popularity doesn't guarantee profit. Your most ordered dishes often suffer from generous portioning, extra garnishes, and outdated pricing that hasn't kept pace with rising ingredient costs.
💡 Example:
A bistro sells 80 steaks per week for €28.50 (incl. 9% VAT). The owner assumes he's profitable because customers love it.
- Selling price excl. VAT: €26.15
- Actual ingredient costs: €11.20
- Food cost: 42.8%
He's losing €2.60 per portion. Weekly loss: €208. Annual damage: €10,816.
The hidden cost eaters
Popular dishes attract problems you won't spot without careful tracking:
- Portion creep: Chef serves 250g steak instead of specified 200g
- Generous garnishing: Extra sauce drizzles, additional vegetables
- Stale pricing: Supplier increased meat costs 18%, but your menu price stayed flat
- Ignored trimming loss: You buy whole fish at €16/kg, but after filleting you're paying €29/kg
⚠️ Watch out:
The more popular a dish, the more likely your chef adds extra touches. That generosity costs real money.
The real calculation
After managing kitchen operations for nearly a decade, I've learned you must account for EVERYTHING that touches the plate:
- Main ingredient (including all trimming waste)
- Every side dish and garnish
- Sauces and dressings
- Cooking oils, butter, seasonings
- Garnishes and microgreens
💡 Example calculation:
Salmon with vegetables priced at €24.50 (incl. 9% VAT):
- Salmon fillet 180g: €5.85 (including trimming loss)
- Vegetables: €1.40
- Potatoes: €0.90
- Sauce: €0.65
- Butter, seasonings: €0.45
Total ingredient costs: €9.25
Selling price excl. VAT: €22.48
Food cost: 41.2% - dangerously high!
What healthy food costs deliver
Drop your food cost from 41% to 30%, and you'll feel the impact immediately:
💡 Impact calculation:
At 60 portions weekly of that salmon dish:
- Before: 41.2% food cost = €9.25 ingredients
- After: 30% food cost = €6.74 ingredients
- Additional profit per portion: €2.51
Extra annual profit: €7,836
Three ways to control costs
High food costs? You've got three moves:
- Increase price: Bump salmon to €28.50, dropping food cost to 32.4%
- Shrink portions: Serve 150g salmon instead of 180g
- Source differently: Find cheaper suppliers or substitute ingredients
⚠️ Watch out:
Check portion sizes first. They creep up without notice, and you can often trim 10-15% without customer complaints.
Why Excel falls short here
You should run these calculations monthly for your top dishes. But Excel makes this painful:
- Manual price updates for every ingredient
- Formula checking and corrections
- Dish-by-dish recalculation
- Month-over-month comparisons
A specialized system shows your food costs instantly and alerts you when they exceed target percentages. This prevents your bestsellers from silently destroying your margins.
How do you calculate your top dishes? (step by step)
Choose your top 5 bestsellers
Grab your POS system or notes and determine which 5 dishes you sell the most. Focus on these, because that's where the biggest impact is. A mistake in a dish you sell 3 times a week is manageable, a mistake in a dish you sell 50 times a week costs thousands of euros.
Add up all ingredients
Go through the plate and write down EVERYTHING that goes on it. Also the splash of olive oil, the sprig of parsley, the butter in the pan. Look up the purchase prices and factor in trimming loss. A whole salmon at €18/kg becomes €32/kg after filleting.
Calculate the real food cost
Divide your total ingredient costs by your selling price excluding VAT and multiply by 100. If you're above 35%, you're losing money. Calculate how much this costs you per year and decide whether to raise the price or adjust the portion.
✨ Pro tip
Track your bestsellers' actual food costs weekly for the next 30 days. You'll discover which popular dishes are profit killers versus profit makers - and the results will shock you.
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
Do I really need to count every ingredient, even spices?
Absolutely. That splash of olive oil seems insignificant, but at 100 portions weekly it costs €3 per week, €156 annually. Small amounts compound quickly.
What if my food cost exceeds 35%?
You're losing money on that dish. Raise the price, reduce portions, or source cheaper ingredients. Start by checking portion sizes - they often grow without anyone noticing.
How often should I recalculate these costs?
Monthly for your top dishes, minimum. Suppliers adjust prices regularly, and you won't always catch it immediately. Monthly checks prevent nasty surprises.
Can I estimate trimming loss percentages?
Don't guess. Weigh your waste once and calculate your actual cost per usable kilogram. Use that percentage going forward, but recheck it seasonally since trimming loss varies.
📚 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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