Most restaurants obsess over every ingredient cost, but smart operators focus differently. While you're tracking 50+ items, just 10 ingredients drive 70% of your purchasing expenses. Missing a 20% beef price jump means losing money on every steak you serve.
Why monitor your most expensive ingredients?
You purchase dozens of different ingredients monthly. Yet 10 of them control 70% of your total purchasing spend. Master those 10, and you've got command over your biggest expense drivers.
💡 Example:
Restaurant with €15,000 monthly purchasing:
- Beef: €2,400 (16%)
- Salmon: €1,800 (12%)
- Cheese: €900 (6%)
- Wine: €750 (5%)
- Olive oil: €450 (3%)
Top 5 = €6,300 of €15,000 (42%)
Which ingredients cost you the most?
Not per kilo—per month. That's the kind of thing you only learn after closing your first month at a loss. Expensive truffles at €200/kg might cost €50 monthly. Chicken at €8/kg hits you for €800 if you're moving volume.
Formula: Monthly impact = Purchase price per kg × Monthly usage in kg
💡 Example calculation:
Salmon fillet:
- Price: €36/kg
- Usage: 50 kg/month
- Monthly costs: €36 × 50 = €1,800
Chicken:
- Price: €8/kg
- Usage: 80 kg/month
- Monthly costs: €8 × 80 = €640
Salmon costs you more per month, even though chicken is cheaper per kilo.
How do you track price movements?
Suppliers slip in price increases quietly. Sometimes they'll flag it on invoices, often they won't. You discover the damage when monthly reports disappoint.
- Review your top 10 prices weekly
- Compare against previous month's data
- Track seasonal swings (fish, produce)
- Request updated price sheets from suppliers
⚠️ Watch out:
Suppliers typically bump prices in January, April, and September. Mark these periods to review pricing and consider menu adjustments.
Calculate price increase damage
Beef jumps 15%—what's that costing you annually? Run the numbers, or your P&L will shock you later.
Formula: Annual impact = Current monthly spend × Price increase % × 12
💡 Example impact:
Beef becomes 15% more expensive:
- Current costs: €2,400/month
- Price increase: 15%
- Extra per month: €2,400 × 0.15 = €360
- Extra per year: €360 × 12 = €4,320
You need to generate €4,320 more revenue to keep the same profit.
Menu price adjustment timing
Don't react to every minor fluctuation. But if your dish food cost climbs from 30% to 35%, you must respond.
- Recalculate food costs after each price change
- Food costs above 35% demand action
- Your options: increase menu price, reduce portions, substitute ingredients
- Be transparent with guests about price adjustments
Digital tracking vs. Excel
Excel functions, but eats time. Weekly price updates, formula checks, error hunting. Tools like a food cost calculator show price change impacts on dish profitability instantly.
Digital system advantages:
- Automatic food cost recalculation
- Alerts for excessive cost percentages
- Price trend history
- Quick alternative ingredient comparisons
How do you monitor your most expensive ingredients? (step by step)
Make a list of your monthly purchasing costs
Get your invoices from last month. Add up per ingredient: price per kg × number of kg purchased. Rank from high to low. Your top 10 are your biggest cost drivers.
Check your top 10 prices weekly
Call your supplier or check their website. Note new prices. Calculate the impact immediately: new price × monthly usage = new monthly costs.
Calculate the new food cost per dish
If an ingredient becomes more expensive, the food cost of dishes containing it rises. Recalculate: ingredient costs / selling price excl. VAT × 100. Above 35%? Time to act.
✨ Pro tip
Set up weekly alerts for your top 10 ingredients every Monday at 9 AM. Track their 30-day price trends and flag anything moving more than 8% month-over-month.
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 check prices with suppliers?
For your top 10 ingredients: weekly. For everything else: monthly. Suppliers raise prices frequently without major announcements, especially for meat and fish.
What if my supplier doesn't provide fixed pricing?
Request weekly price updates via email. Or find a supplier with transparent pricing. Unpredictable costs make planning impossible.
Should I raise menu prices immediately after every cost increase?
No, but watch your food cost percentages. If they jump from 30% to 35%, you're losing profitability and need to act.
How do I explain price increases to customers?
Keep it honest and brief: 'Due to rising ingredient costs, we've updated our menu pricing.' Guests understand this, especially for recognizable items like meat and seafood.
⚠️ 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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