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Buying across sites: procurement when you go from one venue to five

How to move from every chef buying their own way to one buying system across your sites: specs, a short supplier list, price checks and credit notes, without losing what made each venue good.

Photo: RDNE Stock project / Pexels (photo page on Pexels, opens in a new tab)

With one site, buying lives in the head chef's phone. They know the veg man, the butcher's rep and which wholesaler will take a late order on a Friday. It works because one person sees everything.

At three sites it starts to creak. At five it's costing you money every week, and you can't see where. The same chicken thigh arrives from three suppliers at three prices. One kitchen gets a credit note for a short delivery and the others don't bother chasing. Nobody can tell you what you spent on dairy last month across the group.

This guide is about building a buying system that grows with you, without turning your kitchens into a central catalogue nobody believes in.

Start with what you buy, not who you buy from

Before you talk to a single supplier, pull the last three months of invoices from every site and put them in one sheet. It's a dull day's work, and it's the most useful thing you'll do this quarter.

Group every line into categories (meat, fish, dairy, fresh produce, dry goods, drinks, packaging, cleaning) and rank them by spend. In most groups a small number of lines make up most of the money. Those are the ones worth negotiating. The long tail of odd items is where you let chefs keep some freedom.

You can't negotiate what you can't see. One spreadsheet of every invoice comes before any supplier meeting.

Write a spec for every line that matters

A spec is a short description that means two sites ordering "chicken thigh" get the same thing: boneless or bone-in, skin on or off, size range, fresh or frozen, origin if it matters to your menu, pack size. Without specs you can't compare prices, because you're not comparing like with like.

Specs also protect you on allergens. If a supplier swaps a product for a "similar" one, the ingredients can change. The Food Standards Agency's guidance is clear that you're responsible for the allergen information you give guests, so a substitution that nobody checked becomes your problem at the table.

Fewer suppliers, on purpose

The usual move is to cut a long supplier list down to a core few per category, with a named backup. The benefits are real: better prices for bigger volumes, one set of delivery windows to plan rotas around, and fewer invoices for whoever does your accounts.

The risk is putting everything with one supplier and losing all your leverage. A common pattern is one main supplier per category and one you use regularly enough to stay a real customer. Keep the local producers who make your menu special. Group buying is about the core lines, not removing everything that's interesting.

Worked example: one line, five sites

This is an illustrative example, not real prices. Say your five sites each buy about 40kg of the same chips a week, which is 200kg across the group. Three sites pay £2.10 a kilo and two pay £2.40 because they order from a different wholesaler.

  • Current weekly spend: (120kg × £2.10) + (80kg × £2.40) = £252 + £192 = £444
  • Move everyone to a single price of £2.05 for the combined volume: 200kg × £2.05 = £410
  • Weekly saving: £34. Over 52 weeks that's £1,768, on one line.

Now do that for your top 30 lines. The numbers will vary, and some lines won't move at all, but this is why the spreadsheet comes first. Put the savings next to your sales and you'll see what each one is worth in covers you don't have to find.

Check prices every week, not every year

Agreed prices drift. A case price ticks up, a promotion ends, a delivery charge appears. The fix is boring and it works.

Credit notes deserve their own mention. In a busy kitchen, signing for a delivery with two cases missing and forgetting about it is normal. Across five sites that adds up. Make "no credit note, no sign-off" a house rule, and give one person the job of matching notes to invoices.

Payment terms are part of the price

Bigger volumes give you room to talk about terms as well as price. Thirty days instead of seven can make a real difference to cash flow when you're opening sites. Agree terms in writing, then pay on time. GOV.UK's guidance on late payment sets out that businesses can usually agree payment dates of up to 60 days, and suppliers can claim interest if you pay late. Being a reliable payer is also what gets you a call back when stock is short.

Keep the kitchens on side

The fastest way to kill a group buying plan is to announce it from head office. Involve your head chefs from the start: let them taste the samples, sign off the specs and keep a small budget for local and seasonal lines. Then report savings back to them, by site. Chefs who can see their food cost going down are your best supporters.

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Your first month

  • Week 1: gather three months of invoices from every site into one sheet.
  • Week 2: rank by spend and write specs for your top 30 lines with head chefs.
  • Week 3: get quotes from your current suppliers and one or two new ones on the same specs.
  • Week 4: agree prices and terms, set up the weekly price check and the credit note rule.

Buying well across sites isn't glamorous, and most of it comes down to keeping good records. But it's one of the few levers that can improve margin at every site at once.

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Sources

  1. Food Standards Agency: Allergen guidance for food businesses (opens in a new tab)
  2. GOV.UK: Late commercial payments: charging interest and debt recovery (opens in a new tab)

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