Suppliers: taking back the line that drifts on its own
Supplier prices never jump all at once — they creep, invoice by invoice, until the margin has moved and nobody decided it should. Here's how to log every invoice, track increases where they actually happen, and renegotiate with numbers instead of a feeling.
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Definition
A negotiated price list is the set of prices agreed with a supplier, ingredient by ingredient — the reference every delivery is meant to match. Without one kept current, a price creeping up on an invoice line goes unnoticed for months.
The line that slips past control the easiest
Food cost typically runs 28–35% of revenue in the kitchen, 18–24% at the bar — but it's rarely the negotiated price that drifts. It's the price actually paid.
- Theoretical-vs-actual variance in the kitchen typically runs 3–5% (Restaurant365, MarginEdge) — and part of that gap is exactly the supplier increases nobody caught.
- On a 5–10% net margin, a 5–20% gap between perceived and real costs can mean 30–50% of profit quietly evaporating.
- A 3% increase on a recurring line, unnoticed for six months, usually costs more than a negotiation that goes badly.
The problem is almost never the price on negotiation day. It's the price the following Thursday, and the one after that, nobody reads again.
Wholesaler, cash & carry, direct-from-producer — the channel isn't the question
Whether your products come from a general wholesaler, a cash & carry, or a direct producer relationship, the sourcing channel doesn't change what actually matters: is the price paid today the one that was negotiated?
That's where the margin lives — not in which supplier you pick, but in tracking what they actually charge, week after week.
Taking back control, invoice by invoice
Not a one-off negotiation — a loop. Four steps, each feeding the next.
- 1
Log every invoice
Every invoice enters the system the moment it arrives — not read back next month from a pile of paper. It's the only way to know what was actually paid, line by line.
- 2
Track increases line by line
Every ingredient keeps its own price history. A 40-cent jump on a bottle shows up right away — it stops drowning in the invoice total.
- 3
Renegotiate with data
A price history beats a gut feeling with a supplier. You know when it moved, by how much, and on which lines — the conversation changes shape.
- 4
Pass it through to the menu
A supplier increase that never reaches the selling price gets paid twice: once to the supplier, once out of margin. A live food cost tells you when to act.
Price tracking, with no re-typing
methodus keeps the purchasing loop in the same place as the rest of the venue:
Invoice scanning
Photograph or forward the invoice: every line is read, every price updated, every recipe re-costed. No re-typing, no spreadsheet gathering dust. See invoice scanning →
Price history per ingredient
Every ingredient keeps a record of what it's cost, invoice after invoice — a quiet increase shows up at a glance, not at quarter-end reconciliation.
Increase alerts
An abnormal jump on a line surfaces on its own. You stop having to re-read every invoice to catch it.
Net, ex-VAT prices
Every purchase price is recorded ex-tax, once — comparisons across suppliers and over time stay honest, with no manual recalculation.
Scanning replaces re-typing, history replaces memory, and the negotiation runs on numbers — not a year-end gut feeling.
The margin is won as much on purchasing as on the menu. See where it leaks across the whole venue: restaurant profit margin → — the benchmarks and the full method.
Supplier & purchasing FAQ
Show up with a price history, not an impression: what changed, since when, on which lines. Bundle volume where you can, compare at least two suppliers on your heaviest cost lines, and renegotiate on a fixed schedule rather than in a panic once the margin has already moved.
Check the real size of the increase against the ingredient's price history first — a jump that feels huge is sometimes small, and the reverse happens too. Then ask for the reason, compare against another supplier if you can, and decide whether it needs to pass through to the menu price.
Only if the price gap outweighs the cost of switching — a new relationship, quality to re-verify, lead times to learn. On low-volume lines, the time spent comparing usually costs more than it saves. On the lines that carry most of your food cost, even a few percent is worth the comparison.
It's the set of prices agreed with a supplier, ingredient by ingredient — the reference every delivery is meant to match. Without one kept current, a price creeping up on an invoice goes unnoticed until it's become a habit.
Photograph them at receiving instead of stacking them for later: an invoice-scanning tool reads the lines, updates prices, and re-costs the affected recipes automatically. The paper stays the legal record; price tracking happens somewhere else.
Who builds methodusmethodus is built by an operator. Nathaniel Gilliand, École hôtelière de Lausanne graduate, runs restaurants, bars and beach clubs. This is the tool he built to find the margin that was evaporating in his own P&L.
14-day trial, no credit card.
The price paid, finally the one you negotiated
Every invoice scanned, every price tracked, every increase visible before it becomes the new normal.
14-day trial · No credit card · Cancel anytime
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