Food waste costs the average restaurant 8-15% of total purchases. That means you're literally throwing money away without seeing it. By viewing waste as a financial system and tracking your numbers, you can save hundreds of euros per month.
Where is your money leaking through waste?
Food waste has three sources that all eat into your profit:
- Purchasing: Ordering too much, miscalculating
- Preparation: Mise-en-place that doesn't sell
- Plate: What guests leave behind (oversized portions)
💡 Example:
Restaurant with €15,000 in purchases per month:
- 10% waste = €1,500 per month
- On an annual basis: €18,000 thrown away
- This could have been €54,000 in revenue (at 33% food cost)
Measure your waste by category
Start tracking what gets thrown away. Break it down into categories:
- Vegetables: Spoiled, cut too much
- Meat/fish: Past date, prepped too much
- Dairy: Soured, wrong quantity
- Bread: Stale, over-ordered
⚠️ Important:
Don't just weigh what you throw away, also calculate what it cost. A kilo of old salmon at €32/kg hurts more than a kilo of old potatoes at €2/kg.
Implement a FIFO system
First In, First Out is the foundation of waste prevention. Use the oldest products first:
- Label everything with the date it arrived
- Place new deliveries behind old stock
- Check daily what expires today or tomorrow
- Plan menus around products that need to move quickly
Calculate your waste percentage
Track how much you throw away as a percentage of your purchases:
Waste % = (Value thrown away / Total purchases) × 100
💡 Example calculation:
Week 1 figures:
- Total purchases: €3,200
- Thrown away: €280 in products
- Waste: (€280 / €3,200) × 100 = 8.8%
This is acceptable. Above 12% gets expensive.
Portion control as waste prevention
Oversized portions mean guests leave food on their plates. This also counts as waste:
- Weigh your standard portions and stick to them
- Train staff to serve consistent portions
- Regularly check what comes back on plates
💡 Impact of portion control:
Steak 200g instead of 250g:
- Savings per portion: 50g × €32/kg = €1.60
- At 40 steaks per week: €64
- Per year: €3,328 in savings
Digital tracking vs. paper lists
Many restaurants track waste on paper, but that makes it hard to spot patterns. A digital system like KitchenNmbrs helps you:
- Compare waste per day/week/month
- See which products get thrown away most often
- Automatically calculate how much money you're saving
- Spot trends (for example, too many vegetables every Monday)
How do you set up a waste tracking system?
Start with a scale and notebook
Place a scale by the trash bin and a notebook next to it. Note every day what gets thrown away: product, weight, estimated value. Start simple — perfection comes later.
Calculate your waste percentage weekly
At the end of each week, add up what you've thrown away and divide it by your total purchases. Aim for under 10%. Above 15% and you're losing too much money.
Identify your biggest loss items
Look at which products get thrown away most often and cost the most. These are your priorities to tackle. Often it's fresh vegetables, fish, or specialty ingredients.
Adjust your purchasing based on data
Use your waste data to buy smarter. If you throw away 2kg of carrots every week, order less. Better to order twice than to throw away.
✨ Pro tip
Start by tracking only your 5 most expensive ingredients. Once you have those under control, you've already tackled 70% of your waste costs.
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
How much waste is normal in a restaurant?
Typical waste ranges between 5-12% of total purchases. Under 8% is good, above 15% costs you too much money. Fine dining often has slightly more waste due to higher quality standards.
Should I also count what guests leave on their plates?
Yes, that's also waste and it costs money. If guests consistently leave a lot behind, your portions are probably too large. Smaller portions mean lower food cost.
How do I prevent my team from throwing things away out of laziness?
Set clear guidelines about what can and can't be thrown away. Show them what waste costs in euros. A product that's 'a bit soft' can often still go into soup or sauce.
Can I completely prevent waste?
No, some waste is normal in every kitchen. Aim to minimize it, not eliminate it. Being too strict about using products can compromise quality and safety.
How often should I review my waste numbers?
Weekly is ideal. Daily is too much hassle, monthly is too late to adjust. A 10-minute weekly check can save you hundreds of euros.
📚 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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