A restaurant owner recently discovered they were losing €2,400 annually on just one broccoli dish because they ignored trim loss calculations. Broccoli and cauliflower can lose 40-60% of their weight during prep, yet most kitchens still price based on purchase weight. Here's how to calculate your real costs and stop bleeding money.
What is trim loss on broccoli and cauliflower?
Trim loss represents the weight difference between your purchase and what actually makes it onto plates. For broccoli and cauliflower, you're tossing:
- Thick stems that you throw away
- Yellow or damaged leaves
- Outer leaves that are too tough
- Brown spots that you cut off
This loss directly hammers your cost price. Purchase at €3.50 per kilo but discard 50%? You're actually paying €7.00 per kilo for usable product.
The trim loss formula
Trim loss % = ((Purchase weight - Usable weight) / Purchase weight) × 100
Actual cost price per kilo = Purchase price / (100% - Trim loss%)
💡 Broccoli example:
You purchase 5 kg of broccoli at €3.50 per kilo
- Purchase weight: 5.0 kg
- After trimming: 2.8 kg usable
- Thrown away: 2.2 kg stem and leaf
Trim loss: ((5.0 - 2.8) / 5.0) × 100 = 44%
Actual cost price: €3.50 / 0.56 = €6.25 per kilo of usable broccoli
Typical trim loss percentages
These percentages serve as guidelines, but exact loss depends on supplier quality and your trimming precision:
- Broccoli: 40-50% (mainly due to thick stem)
- Cauliflower: 35-45% (leaves and stem)
- Romanesco: 35-40% (less waste than broccoli)
- Broccolini: 15-25% (thin stems are edible)
⚠️ Note:
Always calculate using your actual trim loss. Weigh what you discard versus what you keep several times. Every supplier and season brings different results.
Impact on your food cost
Trim loss directly impacts dish cost prices. Calculate based on purchase price without accounting for loss? Your food costs won't balance. And that's one of the most common blind spots in kitchen management - chefs focus on purchase prices while ignoring the massive waste that happens during prep.
💡 Impact example:
Vegetable dish with 200 grams of broccoli per portion
- Calculating with purchase price: 0.2 kg × €3.50 = €0.70
- Calculating with actual price: 0.2 kg × €6.25 = €1.25
- Difference per portion: €0.55
At 100 portions per week: €0.55 × 100 × 52 = €2,860 per year difference!
Minimizing trim loss
You can't eliminate loss completely, but you can reduce it:
- Order smaller, more frequent deliveries - Fresher vegetables have less waste
- Use stems creatively - Broccoli stem is edible, perfect for soup or stir-fry
- Check quality at delivery - Yellow leaves signal older product = more waste
- Store correctly - Proper refrigeration slows yellowing
Administration and control
Track exactly how much you discard. This helps with:
- Accurate cost price calculation for new dishes
- Negotiating with suppliers about quality
- Estimating how much you need to order
- Spotting trends (is the loss increasing?)
Food cost management tools can help you record actual trim loss per ingredient, so your cost prices automatically reflect kitchen reality.
How do you calculate trim loss? (step by step)
Measure the purchase weight
Weigh the broccoli or cauliflower as you receive it from the supplier. Note this weight - this is your starting point for the calculation.
Trim and weigh the usable part
Remove all stems, yellow leaves and unusable parts. Weigh what remains - this is your usable weight for your dishes.
Calculate the loss percentage
Use the formula: ((Purchase weight - Usable weight) / Purchase weight) × 100. This gives you the exact trim loss percentage.
Calculate the actual cost price
Divide your purchase price by the yield (100% minus the loss percentage). This is what you actually pay per kilo of usable vegetables.
✨ Pro tip
Track vegetable waste for exactly 14 days and weigh every scrap by type. You'll discover which suppliers consistently deliver high-waste products and can renegotiate or switch before it costs you thousands annually.
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 always have to throw away the broccoli stem?
No, broccoli stem is edible if you peel it properly. You can use it for soup, stir-fry or finely chop it for salads. This significantly reduces your trim loss and saves money.
How often should I remeasure trim loss?
Measure it at least once per month, or whenever you switch suppliers. Quality varies per delivery, so check whenever you notice changes in your vegetables.
Can I pass trim loss costs on to guests?
Yes, trim loss is part of your cost price. Your menu pricing must cover all costs, including the portions you discard during preparation. Factor it into your dish pricing from the start.
📚 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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