Guide · Kitchen KPIs · UK
A busy kitchen can still lose money. A short weekly review of the right figures catches a drifting cost while it is small, not a month too late.
A kitchen can feel busy and still be losing money, because the things that decide profit rarely announce themselves during service. They show up in a handful of numbers, and the managers who watch them weekly catch a drifting food cost or a creeping wage bill while it is still a small problem. Waiting for the monthly accounts means finding out four weeks too late, by which point the money is already gone. A short, consistent weekly review is one of the highest-value habits a kitchen manager can build.
The point of a weekly rhythm is speed of correction. A supplier price rise, a portioning drift or an over-staffed run of quiet shifts can quietly erode margin for a full month before a monthly report reveals it, and by then the cause is hard to trace. Reviewed each week against the same handful of figures, the same problem is obvious within days and cheap to fix. It does not need to be elaborate; a single page, looked at the same day every week, beats a sophisticated system nobody keeps up.
The core figures
Three numbers do most of the work. Food cost as a percentage of sales tells you whether pricing, portioning and waste are under control; full-service kitchens commonly run food costs somewhere in the high twenties to low thirties per cent, and a couple of points of drift can swallow a large share of profit. Labour as a percentage of sales is the other big lever, usually the largest single cost, and the one most within a manager's daily control through the rota. Gross profit, what is left after food cost, is the figure the whole operation ultimately turns on, and watching it weekly shows whether the other two are pulling in the right direction.
Those percentages only mean something against sales, so covers and average spend per head belong on the same page. Covers show how busy you really were rather than how busy it felt, and average spend reveals whether the menu is working or whether guests are ordering only the cheapest lines. Read together, they explain a soft week far better than takings alone.
Wastage and stock variance round out the picture. The gap between the stock you should have used and the stock you actually used exposes over-portioning, spoilage and theft, and a weekly glance at it keeps small leaks from becoming habits. None of these figures needs to be perfect to be useful; consistency of tracking matters more than precision.
Reading the menu
Sales figures at the dish level turn a weekly review into a menu decision. Knowing which plates sell well and carry a healthy margin, and which do neither, lets you steer the menu toward the items that pay. This is the heart of menu engineering that makes your best dishes sell: promoting the high-margin favourites, fixing or retiring the poor performers, and designing the menu so the numbers work in your favour rather than against you. A dish that sells constantly but barely breaks even can quietly cap a kitchen's profit no matter how busy it is.
Watching the channels
Different sales channels do not earn equally, and a weekly dashboard should keep them apart. Delivery now makes up a large and growing share of restaurant revenue, but platform commissions that can reach around a third of the order value mean a busy delivery week is not the same as a profitable one. Tracking the real margin on delivery platform orders separately from dine-in stops a high-volume, low-margin channel from flattering your headline sales while quietly thinning your profit. The specific benchmarks vary by format and location, so treat these as general principles rather than fixed targets, and build the short list of numbers that fits how your own kitchen actually trades.
Questions
The core set is food cost as a percentage of sales, labour as a percentage of sales, gross profit, covers and average spend per head, plus wastage or stock variance. Watched weekly against the same figures each time, they catch problems while they are still small and cheap to fix.
A drifting food cost or over-staffed run of shifts can erode margin for a whole month before monthly accounts reveal it, by which point the cause is hard to trace. A weekly review surfaces the same problem within days, making it far easier and cheaper to correct.
Full-service kitchens commonly run food costs in the high twenties to low thirties per cent of sales, but the right figure depends on your format and menu. What matters more than hitting a single benchmark is watching your own number for drift week to week.
Delivery is a large and growing share of revenue, but platform commissions can reach around a third of the order value, so a busy delivery week is not automatically a profitable one. Track delivery margin separately from dine-in so a low-margin channel does not flatter your headline sales.
No. A single page reviewed the same day each week beats a sophisticated system nobody keeps up. Most POS and stock tools will produce the core figures, but consistency of tracking matters far more than the tool you use to do it.
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