Converting unprofitable menu items can boost your annual profits by €3,000-€8,000 per restaurant. Dogs represent the worst-performing dishes - unpopular and costly to produce. Transform them into Puzzles (profitable but unpopular) and you'll see immediate margin improvements.
What are Dogs and Puzzles in menu engineering?
Menu engineering sorts your dishes into 4 categories based on popularity and profitability:
- Stars: Popular + profitable (keep)
- Plowhorses: Popular + not profitable (reduce food cost)
- Puzzles: Not popular + profitable (promote)
- Dogs: Not popular + not profitable (fix or remove)
💡 Example Dogs:
You've got three dishes that are underperforming:
- Lamb chops: 2% of sales, 38% food cost
- Sea bass: 3% of sales, 42% food cost
- Vegetarian lasagne: 1% of sales, 35% food cost
Combined, they're only 6% of your sales but eating into profits with excessive food costs.
Calculate the margin impact
To measure the impact, you'll need these figures per dish:
- Current selling price (excl. VAT)
- Current ingredient costs
- New ingredient costs (after modification)
- Monthly portions sold
⚠️ Note:
Always work with selling prices excl. VAT. Your menu shows prices incl. 9% VAT for food.
Formula for margin improvement
Calculate the additional margin per portion using this formula:
Additional margin = (Old ingredient costs - New ingredient costs) × Monthly portions
💡 Example calculation:
Lamb chops get replaced with chicken thigh:
- Old ingredient costs: €11.50 per portion
- New ingredient costs: €6.80 per portion
- Sales: 40 portions monthly
Additional margin: (€11.50 - €6.80) × 40 = €188 monthly
Impact on food cost percentage
Your revised food cost percentage becomes:
New food cost % = (New ingredient costs ÷ Selling price excl. VAT) × 100
💡 Example all three dishes:
After ingredient modifications:
- Former lamb chops: from 38% to 28% food cost = €188/month
- Former sea bass: from 42% to 30% food cost = €156/month
- Former lasagne: from 35% to 26% food cost = €67/month
Total: €411 additional margin monthly = €4,932 annually
What you can expect
From analyzing actual purchasing data across different restaurant types, realistic improvements when converting Dogs include:
- Food cost improvement: 5-15 percentage points per dish
- Margin impact: €2,000-€8,000 annually for 3 dishes
- Popularity: Stays low (that's why they become Puzzles)
- Customer satisfaction: Often improves due to better price-quality ratio
⚠️ Note:
Popularity won't automatically rise. Converting Puzzles into Stars requires active promotion or price adjustments.
Digital support
Systems like KitchenNmbrs instantly show how recipe changes affect your food costs. You can test different scenarios before implementing changes. This prevents discovering later that modifications weren't profitable enough.
How do you calculate the margin impact? (step by step)
Identify your Dogs
Make a list of dishes with low popularity (below 5% of sales) and high food cost (above 35%). These are your Dogs that need to be addressed.
Calculate current costs per dish
Add up all ingredient costs per portion. Calculate the food cost percentage: (ingredient costs ÷ selling price excl. VAT) × 100.
Design new recipes
Replace expensive ingredients with affordable alternatives. Make sure the new food cost comes in under 30% for a healthy margin.
Calculate the margin improvement
Subtract new ingredient costs from old costs. Multiply by number of portions per month. This is your extra margin per dish.
Add up the total impact
Sum all margin improvements and multiply by 12 for the annual effect. This is your total profit improvement from converting Dogs into Puzzles.
✨ Pro tip
After 6 weeks, verify your Dogs have actually become Puzzles by recalculating food costs. Supplier price increases can quietly erode your projected savings.
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 if customers don't like the new dish?
Test first with a limited group of guests or as a daily special. Only make permanent changes if you get positive feedback. Taste trumps margin every time.
Can I raise the price instead of adjusting ingredients?
That's risky with Dogs since they're already unpopular. Higher prices make them even less attractive. Reduce food cost first, then promote if needed.
How do I know if my new food cost is realistic?
Target 25-32% food cost for most dishes. Below 25% is tough to achieve without sacrificing quality, above 32% makes profitability difficult.
📚 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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