The 5 places food cost quietly leaks — and how to catch each
Food cost almost never jumps in one obvious hit. It leaks — a few cents on a portion, a supplier bump nobody caught, a dish that slid over target three months ago. By the time it shows up on the P&L, it's been running for weeks. Here are the five places it slips away, and a fast way to catch each one.
1Portion drift
The same dish, plated a little heavier every week. No one decides to over-portion — it just creeps as new cooks learn the line by eye. On a high-volume item, an extra half-ounce of protein across a few hundred covers is real money by month's end.
Catch it: write a portion spec for your top ten sellers and keep a scale on the line. Consistency is the fix — every plate the same is both better food and steadier cost.
2Vendor price creep
This is the quietest leak of all. A case of oil goes up 40 cents, produce ticks up with the season, a distributor "adjusts" a line item — and nothing on your end changes, so nothing flags it. A single unnoticed increase can eat a full month of a dish's margin before you feel it.
Catch it: compare unit prices across invoices, not just invoice totals. The total looks normal; the per-pound number is where the creep hides.
3Waste and overproduction
Trim, spoilage, and prepping more than the day needs. Overproduction is the sneaky half — it doesn't look like waste on Tuesday, it looks like being ready. But food prepped and not sold is margin in the compost.
Catch it: prep to demand, not to habit. Size batches from what actually sells on a given day of the week, and build trim into other dishes on purpose.
4Menu items that slipped over target
A dish was priced right when it went on the menu. Then its ingredients crept (see #2), and now it runs at 42% food cost while you think it's at 32%. It's still selling — which is exactly why it's dangerous. Volume on a low-margin dish loses money faster than a slow one.
Catch it: re-cost your menu against today's prices, flag anything over your target, and re-price or re-engineer those few dishes.
5Untracked usage (variance)
The gap between what you should have used (recipes × sales) and what you actually used (counts). That gap is where over-portioning, waste, comps, and the occasional walk-out all pool together. If you never count, you never see it.
Catch it: take regular counts and compare usage to theory. You don't need a forensic audit — just enough of a rhythm to notice when a number drifts.
Here's the encouraging part: because these leaks are small and specific, closing them is cheap. A kitchen doing $50,000/month in food that trims its food cost by just 1% keeps about $500 a month — roughly 3.4× a $149 plan — without changing a single recipe. It's not one big win; it's five small ones you stop leaving on the table.
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