Restaurant overproduction wastes an average of 8-12% of total food costs annually. You're preparing too much food that sits around and eventually hits the trash bin. Here's exactly how to calculate what overproduction costs your operation.
What is overproduction in the kitchen?
Overproduction is everything you make but don't sell. Think of:
- Too much mise-en-place prepared
- Daily specials that don't sell out
- Buffet leftovers
- Sauces and garnishes that get thrown away
Every gram that goes in the trash has cost you money. Not just the ingredients, but also the labor time to make it.
The hidden costs of overproduction
Overproduction costs you money in three ways:
💡 Example:
You make carbonara sauce every day for 50 portions, but only sell 35.
- 15 portions of sauce @ €1.80 ingredients = €27.00
- Labor time 30 minutes @ €20/hour = €10.00
- Energy (cooking, cooling) = €2.00
Loss per day: €39.00
Per year (300 working days): €11,700
How do you measure overproduction?
Start by tracking what you throw away. Many kitchens skip this step, which means they're blind to their losses.
Track these numbers daily:
- How many portions made
- How many portions sold
- How many portions thrown away
- Cost price per portion
In my experience, this is one of the most common blind spots in kitchen management - chefs focus on what goes out the door, not what lands in the waste bin.
⚠️ Note:
Don't just count ingredient costs, also include labor time. A thrown-away dish took someone 10-15 minutes to make.
The overproduction formula
Here's how you calculate the financial impact of overproduction:
Overproduction loss = (Discarded quantity × Cost price) + (Discarded quantity × Labor time)
💡 Example calculation:
Daily special: beef tenderloin with vegetables
- Made: 20 portions
- Sold: 14 portions
- Discarded: 6 portions
- Ingredient cost per portion: €8.50
- Labor time per portion: 8 minutes @ €20/hour = €2.67
Loss: 6 × (€8.50 + €2.67) = €67.02 per day
Recognizing patterns in overproduction
Overproduction often follows patterns you can predict:
- Monday: Often fewer guests than expected
- Bad weather: 20-30% fewer visitors
- Special occasions: Mother's Day, Valentine's Day vary greatly
- Season: Heavy dishes in summer often go unsold
Prevention strategies
The smartest way to prevent overproduction is planning with flexibility:
💡 The 80/20 rule:
First make 80% of your expected quantity. If it gets busy, make the last 20% on demand. Better to have customers wait a few minutes than throw away €50 worth of food.
Practical tips:
- Prepare à la minute dishes where possible
- Use leftovers in new dishes (soup, pasta, risotto)
- Offer unsold daily specials at a reduced price
- Train your team to prep conservatively
Digital support
Food cost calculators like KitchenNmbrs help you recognize patterns by tracking sales figures. You'll see which days and dishes often result in overproduction, so you can adjust your planning accordingly.
How do you calculate the financial impact of overproduction?
Measure your discarded food for one week
Keep track of how many portions you throw away per dish and per day. Also note the reason: overproduction, spoilage, or quality issues. This gives you a baseline to work with.
Calculate the cost price per discarded dish
Add up ingredient costs and labor time. Calculate €20-25 per hour for kitchen work. A dish with €6 in ingredients plus 10 minutes of work costs you €9.33 total.
Multiply by the quantity discarded
Quantity discarded × total cost price = your daily loss. Multiply by 300 working days for your annual impact. This is the amount you can save by planning smarter.
✨ Pro tip
Track your overproduction patterns for exactly 14 days across different weather conditions and events. You'll discover your kitchen's specific waste triggers and can reduce prep quantities by 15-25% on predictable low-volume days.
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 overproduction is normal in a restaurant?
Standard is 3-8% of your total food cost. If you're above 10%, you're losing significant money. Measure for a week to know your own percentage.
Should I include labor time in overproduction costs?
Yes, absolutely. A discarded dish took someone time to make. Calculate €20-25 per hour for kitchen work when determining your cost price.
How do I prevent overproduction at buffets?
Calculate 80% of expected guests and refill as needed. Offer different portion sizes and train staff to serve conservatively.
📚 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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