Single-leaf charcoal-fired green tea (Liu An Gua Pian)
The only Chinese green manufacture with no rolling in it at all: each leaf is separated from its bud and stem by hand, fired in two pans, and finished over a white-hot charcoal fire.
What makes this route what it is
It is defined by an absence. No rolling appears anywhere in the route, which makes it the only green tea in this catalogue whose leaf is never deliberately ruptured, and the two decisions that make that possible are both unusual in themselves: the bud is thrown away rather than prized, and the final drying is done at a heat that would destroy a leaf carrying either bud or stem. Remove the hand separation and the old fire cannot be used; remove the old fire and the hand separation buys nothing.
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.
Picked later than a famous Chinese green — the leaf needs substance to survive the firing, so the one-bud-one-leaf standard prized elsewhere would be useless here.
Ban pian: each shoot snapped apart by hand, the bud and the stem set aside, the leaves sorted by position so pieces of like thickness fire together. Done on fresh leaf, before any heat, and there is no machine for it.
Two pans rather than one — sheng guo to kill the enzymes fast, then shu guo at a lower heat where the leaf is pressed out into the flat oval that gives the tea its name. Fixation and shaping, with no rolling between them.
The first two of three fires. Mao huo takes the leaf to roughly four-fifths dry; xiao huo follows after a day or two of spreading, which lets moisture redistribute from the centre of the leaf before the last stage.
The old fire, two days later. A basket carried over a white-hot charcoal fire for a second at a time by a relay of workers, well over a hundred passes, the leaf redistributed between each, until a bloom shows on the surface. This is the operation that separates the tea from an ordinary basket-dried green.
First and second leaf were kept apart from step two and are graded and sold separately, so the sorting here confirms a separation made by hand days earlier rather than making a new one.
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.
Chinese pan-fired green tea
One step left outThis route leaves out an operation the other performs. Omissions are usually irreversible — the step cannot be added back later.
The standard Chinese green route rolls or flat-shapes after fixation. This one does neither, and the omission is irreversible — an unruptured leaf cannot be rolled once it has been fired dry.
One position in the route is filled by a different named method. The shape of the route is unchanged.
The two routes that share the old fire, and the only two in the catalogue that use it. In the Huoshan yellow route it alternates with the smothering piles; here it comes once, at the end, and nothing follows it.
Where it goes wrong
Leaving bud or stem in the batch is the failure that cascades: those pieces carry more moisture, they scorch or shatter in the old fire, and the fault shows as burnt fragments in a tea whose whole point is even flat leaf. Rushing the rests between the three fires is the other one — the leaf looks dry, the centre is not, and it softens again in the packet.
In full
Seven operations, and the interesting one is the operation that is missing. Every other green tea in this catalogue is rolled or flat-shaped, because rupturing the leaf is how a tea gives up its liquor quickly. This route never ruptures it. Instead a picked shoot is snapped apart by hand so that only single leaf blades go forward — no bud, which inverts the usual Chinese hierarchy, and no stem — and those leaves are fired whole. Two pans follow, a hot one to fix and a cooler one to shape the leaf into its flat oval, and then three separate charcoal firings spread across several days: the first to roughly four-fifths dry, the second after a day or two of resting, and the last, the old fire, at a heat no basket could sit in. In that final stage two people carry a basket over a glowing fire for a moment at a time, hand off to the next pair, and repeat well over a hundred passes until a faint bloom appears on the leaf. A tea with a bud or a stem in it would break apart under that treatment, which is why the hand separation at step two is not fussiness but the precondition for everything after it.