Picture this: you're running a busy restaurant, revenue looks solid, but somehow profit keeps shrinking. Most owners focus on total sales while their margins quietly bleed out through untracked food costs. Monthly analysis of the right cost data turns you from reactive to proactive—catching small leaks before they become profit disasters.
Which food cost data should you check monthly?
Effective cost control starts with tracking three essential metrics each month:
- Food cost percentage per dish - reveals which items are eating your margins
- Total food cost of your entire menu - provides the complete financial picture
- Cost per cover - indicates whether operational efficiency is improving
? Example monthly analysis:
Restaurant with 1,200 covers in March:
- Total ingredient costs: €12,600
- Total revenue excl. VAT: €36,700
- Food cost March: 34.3%
- Cost per cover: €10.50
Compare this with February: was it 32.1%? Then your costs are climbing.
How do you spot efficiency problems in your data?
Watch for these warning signs that signal declining efficiency:
- Rising food cost at unchanged prices - suppliers bumped their rates
- Higher cost per cover - portions grew or waste increased
- Wide variance between dishes - some items are profit killers
⚠️ Watch out:
A food cost jumping from 30% to 35% looks minor, but at €500,000 annual revenue it drains an extra €25,000. That's more than your chef's monthly salary.
What actions can you take based on your data?
Once your cost data reveals problems, you've got several moves available. Most kitchen managers discover too late that small adjustments compound into major savings over time.
- Adjust menu pricing - increase prices on margin-killing dishes
- Trim portion sizes - 20 grams less protein saves roughly €2 per plate
- Source alternative ingredients - find cheaper suppliers or substitute products
- Cut unprofitable items - eliminate dishes that consistently lose money
? Example action plan:
Your salmon fillet runs 38% food cost (way too high). Options:
- Bump price from €28 to €32: food cost drops to 32%
- Shrink portion from 200g to 180g: food cost becomes 34%
- Switch suppliers: from €24/kg to €21/kg = 30% food cost
Pick the option that aligns with your concept and customer expectations.
How often should you adjust?
Monthly analysis hits the sweet spot for most restaurants. Checking too frequently creates unnecessary stress, while waiting too long lets problems spiral out of control.
- Monthly: comprehensive food cost review of all menu items
- Weekly: monitor your 5 top-selling dishes
- Daily: track waste levels and portion consistency
Tools like KitchenNmbrs automatically generate these figures, eliminating manual calculations. That streamlines your monthly steering process significantly.
Related articles
How do you set up monthly food cost analysis? (step by step)
Gather your basic data
Record for each month: total ingredient costs, total revenue excl. VAT, and number of covers sold. Get these figures from your POS system and supplier invoices.
Calculate your key figures
Food cost percentage = (ingredient costs / revenue excl. VAT) × 100. Cost per cover = total ingredient costs / number of covers. Compare these with the previous month.
Analyze per dish
Check the food cost of your 10 best-selling dishes. Which ones are above 35%? Those probably cost you money and need action.
Create an action plan
For each problematic dish: raise the price, reduce the portion, or find cheaper ingredients. Choose one action per dish and execute it next month.
✨ Pro tip
Track your top 3 protein dishes every 2 weeks—they typically represent 60% of your food costs. If these stay on target, you've controlled the bulk of your cost risk.
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
What is a normal food cost for a restaurant?
How often should I update my food costs?
What if my food cost suddenly spikes?
Do I need to make all dishes equally profitable?
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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