Daily specials that don't sell are hidden money drains. You've bought ingredients, used staff for preparation, and everything ends up in the trash. Here's exactly how to calculate what such a failed daily special really costs you.
What are waste costs for a daily special?
Waste costs for a daily special extend far beyond just the ingredients. You've invested time, energy and space for something that didn't generate a single euro. The real issue: many business owners only calculate the purchase price of the ingredients. But there are additional hidden costs lurking beneath the surface.
💡 Example:
You prepare 20 portions of salmon tartare as a daily special. Only 3 sell.
- 17 portions wasted
- Ingredient cost per portion: €8.50
- Preparation time: 2 hours (€30/hour)
- Cooling energy costs: €2
Total waste costs: €207
The complete cost calculation
For an accurate calculation, you'll need to add up all the costs you've incurred for the daily special:
- Ingredient costs: Everything you've purchased for this dish
- Preparation labor costs: Chef's time × hourly rate
- Energy costs: Cooling, preparation, keeping warm
- Opportunity costs: What else could you have made instead?
Then you calculate: Total costs - Revenue from sold portions = Waste costs
💡 Concrete calculation:
Daily special: 15 portions of ossobuco, sold: 4 portions
- Ingredients for 15 portions: €127.50
- Preparation time 3 hours: €90
- Energy costs (oven): €8
- Total costs: €225.50
- Revenue from 4 portions (€28 p.p.): €112
Waste costs: €113.50
Hidden impact on your margin
Those waste costs don't simply vanish. They drag down your overall margin. If your annual revenue is €400,000 and you lose €200 monthly on failed daily specials, that costs you 0.6% of your revenue. From analyzing actual purchasing data across different restaurant types, this seemingly small percentage represents money that comes directly off your profit.
⚠️ Note:
Also count what you DIDN'T earn. If you would normally have sold 15 portions of your standard dish (with 30% margin), you've also missed that profit opportunity.
How do you prevent this in the future?
The most effective way to limit waste costs is to plan smarter:
- Start small: Test a daily special first with 5-8 portions
- Check history: Which specials worked and which didn't?
- Calculate break-even: How much do you need to sell to cover costs?
- Plan reuse: Can leftovers be transformed into other dishes?
💡 Break-even example:
Daily special with €12 ingredients per portion, €35 selling price
- Margin per portion: €23
- Preparation costs: €60
- Break-even: €60 ÷ €23 = 3 portions
You need to sell at least 3 portions to break even
Recording and analysis
Track which daily specials succeed and which fail. Document for each special:
- Quantity made vs. sold
- Total costs (ingredients + labor)
- Revenue generated
- Reason why it didn't work (too expensive, unfamiliar, bad weather)
With tools like KitchenNmbrs you can maintain this data digitally and spot patterns. This way you'll identify which types of specials appeal to your guests and which you should avoid.
How do you calculate waste costs of a daily special?
Add up all costs
Calculate total costs: ingredients + preparation time (hours × chef's hourly rate) + energy costs. Don't forget to include time for mise-en-place and cleanup.
Calculate revenue
Multiply the number of portions sold by the selling price excluding VAT. This is what you actually earned from the daily special.
Subtract revenue from costs
Total costs minus revenue = your waste costs. This amount came directly off your profit without you getting anything in return.
✨ Pro tip
Track every failed special for 8 weeks and calculate the exact waste cost within 24 hours of service. You'll quickly spot which ingredient categories are draining your profits most.
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
Should I also include the time for purchasing?
Only if you went shopping specifically for this daily special. If you included the ingredients in your normal order, you don't need to count the extra shopping time.
What if I can reuse leftovers?
Subtract the value of reusable leftovers from your waste costs. For example: if you can use €20 worth of vegetables in a soup, your net waste costs are €20 lower.
How often should I calculate this?
Calculate this for every failed special over 2-3 months. Then you'll gain insight into patterns and can make better decisions about future specials.
Should I also include fixed costs (rent, gas, water)?
No, you'll pay those anyway. Focus on the extra costs you've made specifically for this daily special: ingredients, extra preparation time and direct energy costs.
What is an acceptable waste percentage?
For daily specials, 10-20% waste is normal because you're experimenting. If you're consistently above 25%, you're probably planning too optimistically and should make smaller quantities.
How do I factor in seasonal ingredient price fluctuations when calculating waste costs?
Track your ingredient costs weekly during peak seasons. Use the actual purchase price from that week, not your standard costing. This gives you a more accurate picture of your true waste impact during expensive periods like truffle season.
📚 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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