Every month, restaurants lose thousands in profits because portions creep up by just a few grams. Your chef adds an extra 50g of steak here, a larger scoop of sauce there. Recipe data and strict portion control stop these invisible profit leaks before they drain your bank account.
Why portion control matters most for your money-makers
Your chef plates 250 grams of steak instead of the recipe's 200 grams. Seems harmless, right? But your bestseller just cost you thousands annually.
? Example:
Steak bestseller - 80 portions per week:
- Recipe: 200g steak at €24/kg
- Actual: 250g per portion
- Extra cost: 50g × €0.024 = €1.20 per plate
Loss: €1.20 × 80 × 52 = €4,992 per year
Target a competing platformggest profit drivers
Don't spread yourself thin across every menu item. Zero in on your 3-5 top sellers - these dishes generate your core revenue.
- Volume impact: High sales multiply every portion mistake
- Ingredient value: Premium ingredients amplify each gram of waste
- Recipe complexity: Multiple components create more opportunities for variation
Define exact portion weights
Ditch vague measurements like "generous portion" or "medium scoop." Every main ingredient needs a precise gram weight.
? Example recipe data:
Teriyaki salmon (bestseller):
- Salmon fillet: 180g (not "1 piece")
- Teriyaki sauce: 25ml
- Rice: 120g cooked (50g dry)
- Vegetables: 100g mix
Food cost: €8.40 - Food cost at €28.50: 32%
Embed control into daily operations
Portion control can't be an afterthought. Build it directly into your prep and service workflow.
- Prep phase: Pre-portion proteins and expensive ingredients
- Service: Use standardized scoops, ladles, and measuring tools
- Quality check: Spot-check plates during service
⚠️ Heads up:
Don't overwhelm your team by changing everything at once. Master portion control on your top 3 dishes first, then gradually expand.
Track variance with purchase-to-sales analysis
From years of working in professional kitchens, I've learned that the numbers don't lie. Compare what you buy against what you should theoretically use.
? Example check:
Weekly steak analysis:
- Purchased: 15 kg steak
- Sold: 68 portions at 200g = 13.6 kg
- Difference: 1.4 kg (includes trim loss + over-portioning)
Growing variances signal portion drift.
Create a digital recipe vault
Staff turnover kills consistency. Store standardized recipes digitally so every cook follows identical specifications.
Food cost calculators like tools such as KitchenNmbrs maintain recipe databases with exact portions and automatically calculate deviation costs.
Related articles
How do you set up portion control? (step by step)
Analyze your top 5 bestsellers
Check your sales data from last month. Which 5 dishes do you sell the most? Focus on these first - this is where the biggest impact is.
Weigh and document exact portions
Go into the kitchen and weigh all main ingredients per dish. Note exact grams, not "a spoon" or "a slice". This becomes your standard.
Calculate food cost per standard portion
Add up all ingredient costs based on your exact portions. Divide by selling price excluding VAT for your food cost percentage. This is your benchmark.
Introduce scales in the kitchen
Place digital scales in strategic spots. Train your team to stick to standard portions, especially with expensive ingredients like meat and fish.
Monitor weekly purchases vs sales
Compare how much of main ingredients you buy with how much you should use according to recipes. Big differences point to portion problems.
✨ Pro tip
Track your top 3 bestsellers' portion costs weekly for the next 30 days. Even a 10% reduction in over-portioning typically saves €2,000-5,000 annually per dish.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Calculate it yourself?
Our free food cost calculator does it in seconds.
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Frequently asked questions
How do I know if my portions are getting out of control?
Should I control portions on every menu item?
What if my chef pushes back on strict portion control?
How often should I audit actual portion sizes?
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
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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