A chalkboard, a notebook, and no awkward questions

Walk into the new café on the corner and you will spot it straight away: a small chalkboard propped beside the till with a single number chalked on it. This morning it read fourteen. That is not the number of drinks sold, or the length of the queue, or anything to do with takings. It is the number of hot drinks that customers have already paid for and left behind for someone else.

The mechanic is deliberately unglamorous. You order your own coffee — a filter is £2.60, a pot of tea £2.40 — and you can add a second one to the tab. The barista writes it in the notebook kept under the till and bumps the tally on the board. Nothing is printed, nothing is handed over, no voucher changes hands. If you come in later, or tomorrow, or the week after next, and you ask whether there is one going, the answer is yes, and the drink arrives. No form, no proof of anything, no explanation required.

The idea is not new. Italian cafés have traded in the caffè sospeso — a coffee paid for and left hanging for a stranger — for the best part of a century. What is new is how well it fits a British high street, where the nearest thing to a communal living room is often the place that sells the tea.

Why the no-questions rule matters more than the free drink

Plenty of well-meaning schemes collapse under the weight of their own administration. You need a referral, a voucher, a signature, a member of staff making a quiet judgement about whether someone looks like they deserve it. That judgement is exactly what stops people asking. A pay-it-forward scheme only works if the route to a free drink is shorter and less embarrassing than the route to not asking at all.

The café has settled on a few firm house rules, and they are worth copying by anyone thinking of doing the same:

• Staff never ask why. The only question is whether you would like tea or coffee, and whether you take milk.
• The tally is public, the claimant is not. The number on the board is visible to everyone. Who claims a drink is nobody's business.
• Nothing is means-tested. No proof of address, no benefit letter, no explanation. If you ask, you get.
• One drink per person per visit. Simple to remember, and it keeps the scheme sustainable when the board is low.
• Any member of staff can say yes. Nobody has to find a manager to authorise it.

What it looks like on a real high street

In practice, the fourteen drinks chalked on the board will go to a fairly ordinary cross-section of the neighbourhood. A night-shift worker finishing at six and waiting for a bus in the rain. A parent who has just done the school run and spent the last of the week's change on a pint of milk. Someone with an hour to kill between two appointments at the health centre. A man who has come in mainly because the flat is quiet and the café is not.

That last one is easy to overlook. A hot drink is worth about £2.50; twenty minutes somewhere warm with other people around is worth a good deal more. Loneliness does not announce itself, and a scheme that requires you to prove you are lonely before you get a cup of tea will not reach the people who need it most.

If you run a café and want to give it a go

The set-up costs are close to nothing, but a few decisions made early will save a headache later:

• Restrict the scheme to two or three drinks — filter coffee, tea, maybe a hot chocolate in winter. Predictable stock, predictable cost, no awkward maths when someone asks for a large oat-milk mocha with syrup.
• Record every donation in one place. A single notebook or spreadsheet, dated, with the drink type. Reconcile it weekly against the board.
• Set a soft ceiling. Thirty unclaimed drinks is plenty. If the board gets much beyond that, pause donations for a fortnight rather than letting it become an accounting problem.
• Train staff with one sentence, and put it in writing: if someone asks, make the drink, no questions.
• Sit the board where customers can see it, not behind the counter. Visibility is what keeps the donations coming.

The practical bits nobody mentions

Donated drinks are still stock, and money taken for them is still income, so keep the paperwork straight and have a word with your accountant about how to record it. Milk wastage rises slightly when a drink is poured without a paying customer waiting, so allow for that.

Allergen information has to be available for a free drink exactly as it is for a paid one — keep the folder where staff can reach it quickly. During the morning rush, make the donation a two-second add-on at the till rather than a separate transaction, or the queue will suffer and the goodwill will evaporate.

It is also worth keeping a discreet card behind the till with the numbers of local support services. Most days you will never need it. On the day you do, you will be glad it is there.

How to take part

If you are a customer, the etiquette is refreshingly straightforward. Buy one when you can comfortably afford to. Claim one when you need to. Neither is a transaction you have to justify to anyone, and the barista genuinely does not mind which side of the scheme you are on today.

If the board reads zero, that is not a rebuke — it just means a run on hot drinks, and it will be topped up by lunchtime. If you are the sort of person who feels awkward taking without giving, consider that the scheme only functions because people do both, often in the same week.

The number on the chalkboard started at four on opening day. It has not dropped below nine since. That is a small thing, and a local one, and on a wet Tuesday in a town centre it is worth rather more than it sounds.