Supy's guide to restaurant cost control argues that the best defence against rising ingredient prices is tighter inventory discipline in five areas: par levels, portion control, frequent stock counts, bulk and group purchasing, and forecasting prep from demand. All five rely on accurate, regularly updated stock data, so the fix begins in the storeroom.
Why ingredient prices make this urgent
When ingredient prices climb, trimming costs stops being a choice. Supy's piece on restaurant cost control argues that the most effective response is not to renegotiate with every supplier or reprice the whole menu at once. Instead, it says, tighten five inventory habits that many restaurants handle loosely, or not at all.
Its price data comes from the US market, where one recent reading put wholesale food costs up 9.7% year on year. The same data showed these rises for individual items:
- Chicken eggs: up 183.3%
- Strawberries: up 35.7%
- Potatoes: up 23.0%
- Coffee: up 14.2%
- Beef: up 9.5%
Those numbers belong to one market, but the lesson applies to any kitchen: a single ingredient jumping in price can throw a dish's margin off almost overnight if nobody is tracking it.
Use par levels, not gut feel, to order
A par level gives each ingredient a floor and a ceiling: the least stock you should hold to meet demand, and the most before you are carrying surplus. Supy's example is a kitchen getting through 20 units of chicken daily, with two deliveries a week. It might keep at least 30 units on hand as a buffer for a sudden rush, and cap stock at 60 so it does not over-order.
Pars are not set and forgotten. They should follow real usage, go up for weekends and known busy periods, and be reviewed every month as demand changes with the seasons. Two ratios help you sense-check them:
- Inventory-to-sales ratio: when this runs high, money is sitting on your shelves in slow-moving stock that could spoil.
- Inventory turnover: Supy treats 4 to 6 turns as healthy, meaning stock moves through the kitchen at an even pace instead of piling up or running dry.
Stop portions from creeping up
Supy cites figures showing that nearly 48% of consumers believe oversized portions add to food waste, and that 15% of main courses are left completely uneaten. Behind those numbers is a cost few kitchens measure: portion creep, where plates slowly get fuller month after month although nobody ever chose to serve more.
The remedies are simple. Weigh ingredients instead of judging by eye, train staff on standard serving sizes, and check plated dishes against the recipe card from time to time rather than assuming the kitchen still follows it. Standardising recipes at every outlet, and keeping them standard, is what keeps a dish's actual cost in line with the cost you planned for.
Count stock more often
Most restaurants count stock once a month. Supy's warning is that when a monthly count shows a gap, the loss happened weeks before. It also points out that manual tracking with spreadsheets or handwritten logs has an error rate of around 5%, which across a restaurant's whole inventory spend can add up to a meaningful sum miscounted every month. What it recommends instead:
- Weekly cycle counts of expensive or fast-moving ingredients
- Quick daily checks on your most important items
- Rotating the counting duty between staff, so one person's blind spots are not repeated shift after shift
Buy in bulk, and buy with others
Supy points to two purchasing levers. The first is to let usage figures, not habit, drive what you order. Where a kitchen consistently needs a known quantity of something every week, buying that amount in a single bulk order can lower the unit price by an estimated 10–15% versus placing frequent small orders.
The second is joining a group purchasing organisation (GPO), where restaurants pool their buying power to get supplier discounts, often quoted at 5–10%, that a single outlet could not negotiate on its own.
Plan prep from forecasts to cut labour cost too
The fifth strategy links inventory to staffing. If you know precisely which ingredients you will need and on which days, you can build prep schedules around genuine demand rather than routine. Prepping too much throws away food and also pays staff for hours spent on dishes no one orders that day. Say a dish sells strongly on Fridays and hardly at all on Tuesdays: you can plan staff and prep to match, cutting food waste and labour cost with one decision.
None of the five works on its own. Each depends on the same foundation: accurate stock data, updated often. Fixing portions while still counting monthly, or negotiating bulk prices with no par levels to tell you what to buy in bulk, only solves part of the problem. The fix starts in the storeroom, long before the loss would appear on your P&L.
What this means for your restaurant
- Set a minimum and maximum par for each ingredient based on actual usage, raise it for weekends and known busy periods, and review the pars every month.
- Weigh portions, train staff on standard serving sizes and check plated dishes against the recipe card regularly.
- Move from monthly stock counts to weekly cycle counts on your costliest and fastest-moving items, with daily spot checks and a rotating counter.
- Use your usage data to combine regular orders into bulk purchases, and consider pooling purchases with other restaurants through a GPO.
Sources
This article summarises the reporting and guides listed above; the figures belong to those sources and are attributed in the text. Check anything that affects your business against your own platform agreements, payout statements and advisers.