Border-trade brick tea
The dark teas that were never made to be collected. Coarse leaf and whole stem, piled and turned for weeks, then pressed into a brick hard enough to travel a thousand miles on an animal and be broken up with a knife at the other end.
What makes this route what it is
The brick is a transport format and not a maturation format, which inverts what compression means everywhere else in the dark category. A pu-erh cake is pressed so that it will change slowly for decades; this is pressed so that it will arrive.
The route, in order
Each note describes what the step is doing in this route. The same operation does a different job in a different chain.
The coarsest intake in the tea trade: mature leaf with stem, cut rather than picked, and in the Sichuan productions including woody growth of several years. Nothing else in the catalogue is made from material like this and it is the reason the rest of the route looks as it does.
Fixation on very coarse material, run with added water in the same way and for the same reason as the Hunan productions. Uneven fixation here is normal and is corrected by the length of the pile rather than by care at this step.
A heavy roll on hot leaf, principally to break down stem. In some Sichuan productions the material is rolled more than once with a pile between the passes, which is a genuine departure from a single-roll route.
Weeks rather than hours: repeated wettings and turnings until the mass is uniformly dark through. This is the longest pile in the catalogue outside shou pu-erh and the route depends on it, because nothing later can make coarse leaf palatable.
Shovelling the mass over on a schedule so that outside becomes inside. Recorded as its own step here rather than folded into the pile because these productions turn many times over many weeks, and the turning schedule is what a maker actually varies.
- 6.
Drying
The fermented maocha is dried and held, sometimes for a season, before pressing. The tea is a trade good at this point and frequently changes hands.
Steamed to pliability immediately before the press, as in every compressed tea. The window is short and the volumes are large, which is why these productions are among the most mechanised in the dark category.
Pressed into a dense rectangular brick, harder than a pu-erh cake. The density is chosen for the journey rather than for the ageing, which is the single most important thing to know about this route and the thing most often assumed backwards.
Slow drying of the finished brick in a warm room over days. A thick block dried fast sets at the surface and stays damp in the core, which spoils inward and cannot be detected until it is broken open.
How it differs from its neighbours
A route described on its own teaches very little. The useful fact is always which other route it is nearly identical to, and where it leaves it.
The two routes are the same tea up to a point. Everything before the divergence is shared; everything after it is not.
Both routes pile leaf under cover for weeks and then press it, and the presses have opposite intentions. A shou cake is compressed to a density that lets it keep changing slowly in storage; a border brick is compressed to a density that lets it survive a journey, and it was never expected to be opened by the person who bought it.
One position in the route is filled by a different named method. The shape of the route is unchanged.
The format slot, filled by a mould and a hydraulic press instead of a woven casing and men with poles. Both densify a pile-fermented coarse tea and only one of them produces a container the weather can be allowed into, which is why the Hunan route has an outdoor step and this one has a drying room.
Where it goes wrong
Drying a thick brick too fast is the standard failure and it is invisible from outside: the surface sets, the core stays damp, and the block spoils inward. At the other end of the route, the coarseness that makes the tea cheap also makes it unforgiving of a short pile — an under-fermented border brick is harshly astringent in a way that milk and salt do not cover.
In full
A large share of the tea China has produced over the centuries left for the grasslands and the plateau rather than for a teahouse, and it was made to a specification that market set: cheap, strong enough to hold up against milk, salt or butter, and durable in transit. The material is the coarsest in the trade — whole shoots with stem, frequently cut with a sickle, and in some productions branches taken back three or four years' growth. The pile is long: repeated wettings and turnings across weeks, considerably longer and more interventionist than a Hunan pile, until the leaf is uniformly dark. Then the mass is steamed and pressed into a dense brick, and the brick is dried slowly, because a thick block dried fast cracks at the surface and stays damp in the middle. What distinguishes the route as a route is that every decision in it answers to transport and to a preparation method rather than to a taster: the density is a shipping property, the coarseness is a price, the strength is chosen for a bowl that will also contain butter or milk. TeaHQ records it separately from the collector-facing dark teas for exactly that reason — a route that was designed backwards from a destination is a different kind of object from one designed forwards from a leaf.