While many kitchens run on instinct and experience, the most profitable ones rely on precise portion control and clear cost guidelines. Without documented standards, you'll see different portion sizes, inconsistent quality and shrinking margins. A simple numbers guide transforms kitchen chaos into controlled profitability.
Why a numbers and portions guide is essential
In busy kitchens, portions often depend on who's cooking. One chef serves 200 grams of meat, another dishes out 250 grams. That 50-gram difference costs you €520 annually at 100 portions weekly with beef at €20/kg.
⚠️ Note:
Without clear agreements, your food cost can be 5-10% higher than calculated. That's €25,000-€50,000 per year on a €500,000 turnover.
What should be in your guide
Your guide needs concrete information that staff can apply immediately:
- Exact portion weights per dish (in grams, not "a generous spoonful")
- Cost price per portion so everyone understands what waste actually costs
- Preparation notes that impact costs
- Deviation protocols (low inventory, damaged ingredients)
💡 Example guide page:
Steak with fries
- Steak: 200g (costs €4.00)
- Fries: 250g (costs €0.75)
- Sauce: 30ml (costs €0.30)
- Salad: 80g (costs €0.95)
Total cost price: €6.00 | Food cost target: max 30%
Make it visual and practical
Text alone fails in hectic environments. Add visual references:
- Photos of correct portion sizes posted at stations
- Digital scales at key preparation areas
- Measuring tools with designated storage spots
- Color-coded systems for different cost categories
💡 Example color coding:
- Green: Food cost below 25% (profitable)
- Orange: Food cost 25-35% (acceptable)
- Red: Food cost above 35% (loss-making)
Involve your team in creating it
Guides imposed from management get ignored. Engage your cooks in development:
- Gather input on realistic portion sizes
- Let them contribute to workflow procedures
- Run a trial week and collect feedback
- Adjust based on their real-world experience
This collaborative approach creates buy-in - a pattern we see repeatedly in restaurant financials where staff-developed systems show 40% better compliance rates.
Keep the guide current
Prices fluctuate, suppliers change, menus evolve. Schedule monthly reviews:
💡 Monthly check:
- Are the cost prices still accurate?
- Do the portion sizes work in practice?
- Have new dishes been added?
- Do cooks have any questions or unclear points?
Digital or paper?
Both formats have trade-offs. Paper stays accessible but gets messy and disappears. Digital versions (tools like KitchenNmbrs) remain clean and update easily, but require tablets or phones in the kitchen.
⚠️ Note:
Whatever format you choose, ensure everyone can access it instantly. An unreachable guide provides zero value.
How do you create a practical numbers and portions guide?
Inventory your current dishes and cost prices
Make a list of all dishes on your menu. Calculate the exact cost price of all ingredients per dish. Also note the current portion size your cooks are using.
Determine the optimal portion size per dish
Look at your desired food cost percentage (usually 28-35%). Calculate which portion size fits your selling price. Test this size with your team for practical feasibility.
Create visual aids
Photograph each dish with the correct portion size. Place scales and measuring spoons in fixed locations. Create color coding for different cost price categories if needed.
Test and refine with your team
Use the guide in practice for a week. Collect feedback from your cooks about what works and what doesn't. Adjust the guide based on their experiences.
Plan regular updates
Schedule a monthly moment in your calendar to review the guide. Update cost prices, portion sizes and procedures if needed. Communicate changes clearly to your team.
✨ Pro tip
Focus your first 2 weeks on just 3 signature dishes with the highest ingredient costs. Master precise portioning on these profit-drivers before expanding to your full menu.
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 often should I update the cost prices in my guide?
Review monthly to catch price changes from suppliers. Major shifts over 5% need immediate updates. Small fluctuations can wait for your regular review cycle.
What if my cooks resist using the guide?
Include them in creating it and demonstrate real cost impacts. Show how a 30-gram overportion costs €156 monthly on just one dish. Make compliance as simple as possible.
Should I include all dishes or focus on key items?
Start with your 10 highest-volume dishes - they drive 80% of your food cost impact. Expand gradually once the system works smoothly.
How do I train new employees on portion control?
Make weighing and cost lookup mandatory for new hires' first week. They'll internalize the financial impact of portion accuracy through hands-on practice.
What's the ideal portion tolerance range?
Aim for ±5% variance on expensive proteins, ±10% on vegetables and starches. Tighter controls on high-cost items protect margins most effectively.
How do I handle portion adjustments for regular customers?
Document any standard modifications in your guide with updated costs. Track these customizations to ensure they don't erode profitability over time.
Should I post food costs where customers can see them?
Never display actual costs in customer areas. Use coded systems or separate back-of-house materials to maintain pricing strategy confidentiality.
⚠️ EU Regulation 1169/2011 — Allergen Information — https://eur-lex.europa.eu/eli/reg/2011/1169/oj
The allergen information on this page is based on EU Regulation 1169/2011. Recipes and ingredients may vary by supplier. Always verify current allergen information with your supplier and communicate this correctly to your guests. KitchenNmbrs is not liable for allergic reactions.
In the UK, the FSA enforces allergen regulations under the Food Information Regulations 2014.
📚 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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