What the GI means
Red tea has protected names too, but they sit unevenly across the category and that matters.
Keemun is the best known of them, and it is protected under the Chinese name Qimen hongcha（祁门红茶）.
Zhengshan Xiaozhong is the other, and its name carries the argument inside itself.
Zheng shan（正山）means the correct mountain, and the prefix exists because imitations came first.
Makers in Tongmu added it to separate their tea from the smoked copies selling under the same name.
Dianhong is protected as well, though the area it covers is spread across several prefectures.
As everywhere in China, a name can be protected 3 different ways, which confuses most buyers.
Product protection is administered by the national intellectual property office, which took it over in 2018.
A certification mark is the second route and the one most often printed on a packet.
The third, the agricultural register, is largely unused for export teas.
Outside China, Keemun is protected in some markets and freely used in others.
What it guarantees
The guarantee is narrow, and for red tea it is narrower than buyers expect.
It guarantees the leaf grew in the named area, which for Lapsang means the Tongmu valley.
That valley sits above 800 m, stays damp, and is the reason the tea was smoked in the first place.
It guarantees the method, and for Zhengshan Xiaozhong the smoking with pine is part of the definition.
A tea sold under that name without the smoke is not the thing the name describes.
For Keemun the method is orthodox manufacture, which is why it holds up under milk.
Orthodox here means withered, rolled, oxidised and fired as whole leaf rather than cut.
Those two guarantees are worth having, because both are visible in the cup.
Smoke either tastes of pine resin or it tastes of a flavouring, and the difference is immediate.
Orthodox leaf either looks whole and wiry or it looks like dust, and there is no middle case.
The 2021 agreement with the European Union lists 100 Chinese products in its first batch, and red teas are on it.
What it does not
What it does not guarantee is where the value in a red tea usually sits.
Grade is not fixed by it, and the spread of grades inside one protected name is wide.
Leaf type is not fixed either, and Qimen is small leaf while Dianhong is broad leaf assamica.
Both carry protected names, and they are not remotely the same drink.
Freshness sits outside the claim, and red tea is often sold long after it was made.
Blending with leaf from outside the area is not excluded, and it is common.
Blending is standard practice in red tea, and a protected name does not forbid it by default.
Harvest is not fixed, and leaf from 2 or 3 pickings can share one mark.
Pine wood rather than an applied flavour is not guaranteed either, and the difference sits in the smell.
Enforcement is complaint driven, which means the worst offenders are usually caught last.
The mark tells you the name is lawful, and it does not tell you the tea is good.
How to use it
Use the name as a filter on the seller rather than as a promise about the tea.
Look for the mark and a licence number, and discount any packet that prints only a logo.
For Lapsang, smell the dry leaf before you brew it, because resin and flavouring smell different.
Real pine smoke sits in the leaf and comes back in the empty cup after the tea is gone.
For Keemun, check that the leaf is whole, since broken grades are where the imitations live.
Brew 5 grams of a protected Keemun against 5 grams of an unmarked one and compare them plain.
If the difference is small, buy on grade and freshness and stop paying for the name.
For Dianhong, the protected name is close to useless, since the area is huge and the leaf varies.
Buy Dianhong on tip content and aroma, which you can see and smell, rather than on a boundary.
The 2021 European listing matters only if you are buying in Europe, and not otherwise.
Treat every protected name as the start of a check, never as the end of one.