The one line that has to be there
Turn the can over, or upside down. In the smallest type on the pack, usually near the best-before date, there is a name and a postal address. It will be introduced by something like "Brewed by", "Brewed and canned by", "Produced by" or just the company name and a town. That is the business that stands behind the product, and it is the single most useful thing on the container.
Compare two real examples from this site. The Madrí Excepcional pack carries "Brewed and packed by: Molson Coors Brewing Company (UK) Ltd., 137 High Street, Burton Upon Trent". Everything else about that can points at Madrid. The address points at Staffordshire, and the address is the part that is not a design decision.
"Brewed by" is not "brewed for"
The wording matters, and the two phrases mean opposite things. "Brewed by" names the brewer. "Brewed for" names the brand owner, and tells you nothing at all about where the liquid was made. A pack that says only "Brewed for" has, quite legally, told you who to complain to and not who made it.
Goose Island IPA is the clean example. The bottles name AB InBev's American plants at Baldwinsville and Fort Collins, so those are imports. The cans say "Brewed for: Goose Island Brewing Company Co. AB InBev UK Ltd" and name no brewery at all. Two formats of the same brand, one of which answers the question and one of which does not, and the can is therefore recorded as not established. It is a craft brand, so it is in the data without a page of its own.
A third form is worth knowing: "Brewed under licence". That is a plain statement that a foreign brand is being made here by someone else, and it is the honest version. It has been normal practice in Britain since the 1970s.
The country of origin field, and why it lies
Retailer product pages carry a "country of origin" field. It is filled in from data the supplier provides, it is frequently wrong, and it is not the same thing as the producer address on the pack. Where the two disagree, the address is the better evidence.
Mahou Cinco Estrellas shows how bad it can get. At Morrisons, the ten-can fridge pack is listed with country of origin United Kingdom and AB InBev UK named as the brewer. The four-can pack of the same beer at the same retailer is listed with country of origin Spain, brewed by Mahou in Madrid and merely canned by AB InBev UK. Sainsbury's splits the difference with "Spain (Packed in United Kingdom)". These cannot all be right, and this site does not pick a winner. There is a whole guide on that one case.
The carton and the cans inside it
A multipack has two surfaces that can carry origin information: the outer sleeve and the cans themselves. They are printed at different times, sometimes in different places, and they do not always agree. When a brand moves production, old sleeves and new cans can sit in the same shop for months.
If you are checking a beer, photograph both. A pack whose sleeve says one country and whose cans say another is not a scandal, but it is a fact worth recording, and it is the kind of thing that resolves an open question here in one go.
What the regulator will act on
Labelling is one thing; advertising is another, and the Advertising Standards Authority has been willing to act. Its guidance is blunt:
Marketing communications should not give a misleading impression about the country of origin of an alcoholic drink.
Advertising Standards Authority, Alcohol: Country of origin
In 2011 it upheld a complaint against Heineken UK over an advertisement for Kronenbourg 1664 headed "FROM THE COUNTRY THAT BELIEVES IN THE LUNCH (TWO AND A HALF) HOUR", which described "a beer from Strasbourg, Eastern France" made slowly. The beer was brewed in the United Kingdom. The regulator's finding was that
the claims appeared to suggest that all stages of the production of the lager took place in Eastern France, the complaint was therefore upheld.
Advertising Standards Authority, on the 2011 Kronenbourg ruling
That ruling is fifteen years old and the practice it addressed is still visible on the shelf. The lesson for a shopper is narrow but useful: heritage language in advertising is not a claim about where your can was filled, and it has been ruled misleading when it was allowed to imply one.
A checklist for the aisle
- Turn the can over and find the producer name and address. That is the answer.
- Read the verb. "Brewed by" names the brewer; "brewed for" names the brand owner and answers nothing.
- Check the strength against the version sold at home, if you know it. A cut of half a point or more usually means a separate recipe for this market.
- If there is an outer sleeve, read that too, and do not assume it agrees with the cans.
- Treat the retailer's country of origin field as a hint, not evidence.
There are 18 beers on this site where no source we trust names the producer at all, and nearly every one of them would be settled by the panel described above. They are listed on the page of open questions.