What is food cost percentage?

Food cost percentage is the share of your food revenue that goes back out the door as ingredient cost. If you sell €10.000 of food in a week and the recipes that produced those plates cost you €2.900 in ingredients, your food cost percentage is 29%. It is the cleanest, fastest signal of three things: are your menu prices set right, are your portions disciplined, and is your kitchen wasting food.

Definition

Food cost percentage measures ingredient cost as a proportion of the revenue those ingredients generated. The numerator is food COGS — the cost of food used in the period, not purchased. The denominator is food revenue only — beverage revenue and its separate beverage COGS get their own ratio (beverage cost typically runs 18-24%, much lower than food).

There are two ways to compute the numerator. Theoretical food cost uses recipe-driven costing: every plate sold contributes its recipe cost to COGS, summed across all sales. Actual food cost uses inventory-driven costing: opening inventory + purchases − closing inventory = food used. The gap between theoretical and actual is your variance — and that gap, if large and persistent, is waste, theft, or recipe drift.

The formula

Food cost % = Food COGS / Food Revenue × 100

Theoretical (recipe-driven):
  Food COGS = sum of (recipe cost × units sold) for the period

Actual (inventory-driven):
  Food COGS = Opening inventory + Purchases − Closing inventory

Variance = Actual − Theoretical (waste, theft, recipe drift)

For daily P&L purposes, theoretical (recipe-driven) is what you want. Inventory counts are too slow and too error-prone to drive same-day decisions. Run the theoretical number every day, then reconcile against actual at month-end via a full inventory count. nouz uses recipe-driven costing with snapshot pricing — every sale draws down its recipe cost at the price that was in effect on the day of the sale, so retroactive supplier price changes never distort historical margins.

Worked example

A neighbourhood bistro, Saturday lunch service.

Food revenue (net): €1.142,50. Food COGS: €337,40. Food cost percentage = 337,40 / 1.142,50 × 100 = 29,5%. Inside the 28-32% target band for a casual bistro. The burger at 30,4% is on the edge — worth checking against the next supplier price update. The fish at 31,8% is the highest contribution to the blended number, but the high ticket price means it is still a strong gross-margin contributor. See the menu pricing playbook for the full re-pricing sequence.

Benchmarks by concept

Higher than the top of your concept band for two weeks running means one of three things: prices set too low for current supplier costs, portions drifted larger than the recipe, or waste/spoilage running hot. The diagnostic order is always: re-cost three best-selling recipes against current supplier prices, then portion-audit those three dishes for a service, then look at the prep list and walk-in for waste. See food cost ratios benchmark for the full sector breakdown.

It helps to keep the neighbouring cost ratios in view when you read food cost, because they interact — a low beverage cost can carry a slightly high food cost, and food cost only makes sense as one half of prime cost. The ranges below are standard hospitality rules of thumb, not fixed targets.

Common mistakes

Food cost is the most-tracked number in restaurants and also one of the most-mis-tracked. These five errors are why an owner can believe food cost is 29% while the kitchen is really running at 34% — a five-point gap that quietly eats a full month of EBIT before anyone notices.

• Costing on purchases, not usage. Adding up delivery invoices for the week and dividing by sales counts food you bought but have not sold yet. Food cost is ingredients used — recipe-driven costing or an inventory count, never the invoice pile.
• Blending beverage into food. Beverage cost runs far lower (18-24%), so folding drinks into the food ratio drags the number down and hides a genuine food problem. Keep the two ratios separate.
• Ignoring the theoretical-vs-actual gap. Tracking only recipe-driven (theoretical) cost and never reconciling against a real inventory count means waste, theft and over-portioning stay invisible. The variance between the two is the whole diagnostic.
• Never re-costing recipes. A recipe cost entered 18 months ago is fiction once supplier prices have moved. If prices crept up and the recipe cost did not, food cost drifts up with no visible cause. Re-cost best-sellers at least quarterly.
• Using gross revenue in the denominator. Dividing food COGS by the gross till total instead of net food revenue understates food cost. Use net food revenue — after VAT — so the ratio matches every published benchmark.

How it shows up in your daily P&L

Food cost is not a standalone report — it is the COGS line inside your daily EBIT. nouz takes gross revenue, subtracts tax and card fees to reach net revenue, then subtracts COGS (recipe-driven food and beverage cost), variable costs, and the day's slice of fixed costs to land on same-day EBIT. Because every sale draws down its recipe cost at the price in effect that day, the food cost feeding today's EBIT is the real, current cost — not a stale spreadsheet estimate.

That is why a portion that drifted or a supplier price that jumped shows up the same evening: it lands directly on today's COGS line and thins today's EBIT, while you can still fix tomorrow's prep. Run your own menu through the food cost percentage calculator to see where each dish sits before you wire it into a daily habit.

Because the snapshot price is locked at the moment of sale, editing a recipe or a supplier cost tomorrow never rewrites yesterday's food cost — historical margins stay honest. So when you compare this Tuesday's food cost to last Tuesday's on the daily P&L, you are comparing like with like: two real numbers, each costed at the prices that were actually in effect, not one live figure that shifts every time you touch a recipe.

Why it matters

Food cost is roughly half of prime cost, and prime cost decides whether the kitchen is profitable. A two-point reduction in food cost percentage on a €500.000-food-revenue restaurant is €10.000 a year of EBIT — and unlike a price increase, it does not risk losing customers. The levers are: re-tender suppliers quarterly, portion-discipline weekly, and menu-engineer the three loss-leaders monthly. None of these need a consultant. They need the number on the screen every evening.

The operators who keep food cost in band check it daily against same-day sales. By the time month-end inventory says "food cost was 34% this month" the three weeks of drift that caused it are unrecoverable. Same-day, recipe-driven food cost is the operational metric. See the daily prime cost routine for the every-evening sequence.

Related concepts

• Prime cost (restaurant) — food cost plus labour, the combined controllable metric.
• Labour cost percentage — the other half of prime cost.
• Food cost ratios benchmark — full sector breakdown.
• Café menu pricing playbook — re-pricing sequence when food cost drifts.
• Daily prime cost for cafés — the every-evening routine.

Common questions