You run the numbers at the end of the month and your food cost comes in at 32%. That feels about right. Somewhere in the back of your head you know 30% is the target, so 32% is close enough. You move on.
The problem is that 32% is an average. And averages hide the actual problem.
The Calculation Most Operators Use Is Incomplete
The standard formula is straightforward: food cost divided by revenue. If you spent €8,000 on ingredients and turned over €25,000, your food cost percentage is 32%. Simple, clean, easy to track.
But that number tells you almost nothing about which dishes are hurting you, which are carrying the menu, or where the real margin is leaking. It is a summary, not a signal.
A restaurant running mains at €14-€22 with a blended food cost of 32% can easily have individual dishes ranging from 22% to 48% food cost. The average looks fine. The mix is the problem.
When I looked at our own menu for the first time dish by dish, the gap between the best and worst performers was almost 25 percentage points. We were selling our way into a margin problem.
What Food Cost Percentage Actually Measures
Food cost percentage tells you what share of each euro of revenue went on ingredients. At 30%, thirty cents of every euro went to the kitchen. That is not inherently good or bad — it depends on your price point, your labour model, and your other cost structure.
A quick-service concept with €10 mains needs a tighter food cost than a sit-down restaurant with €20 mains and lower table turns. The math works differently at different price points.
The number that matters is not your food cost percentage. It is your contribution per cover — how much margin each guest actually leaves behind.
In the Netherlands, a main course typically runs €14-€22 in a mid-market independent. At €18 with a 32% food cost, your ingredient cost is €5.76 per dish. At 28%, it is €5.04. That €0.72 difference, multiplied across 40 covers a night, is €29 per service — roughly €850 a month. Not nothing.
The Three Places the Number Breaks Down
Waste is invisible in the formula. If you prep ten portions and sell eight, the two that went in the bin still land in your food cost. Your percentage goes up, your revenue does not. Operators who track food cost but not waste are reading a corrupted number.
Portion creep is silent. A portion that drifts from 180g to 200g does not feel significant in the kitchen. Over 100 covers a week, that is 2kg of extra product per service. At €12/kg for protein, that is €24 a week — €1,200 a year from one dish.
Supplier prices move, menu prices do not. If your chicken cost went up 8% in January and you have not repriced the menu, your food cost percentage has already moved. Many operators only notice this quarterly, by which point three months of margin have gone.
What to Do With the Number
Start by breaking it down by dish, not by month. Most POS systems can pull this — you need sales mix data and a recipe cost sheet. If you have neither, that is where to begin.
Look at your top five sellers by volume. Calculate the food cost percentage for each one individually. You will almost certainly find at least one dish in the top five that is pulling your blended number up significantly. That dish is where you focus first: adjust the portion, renegotiate the supplier price, or reprice the menu.
Your overall food cost percentage is a lagging indicator. By the time it looks wrong, the problem has already been running for weeks. The dish-level breakdown is where you find it before it compounds.
One concrete thing to do this week: pull your sales mix for the last four weeks and calculate the food cost percentage for your top three dishes by volume. If any of them is above 35%, you have found where to start.
Want to know where your margins are going?
I work with restaurant operators across the Netherlands on exactly this — not a generic framework, but a look at your actual numbers and where the margin is leaking.
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