Inspecting a Pu-erh Cake: What to Check Before Buying

A pu-erh cake can be assessed before purchase with five checks: the face, the edge, the smell, the weight and the sound when tapped. None of them proves the tea is good and together they rule out most of the failures, which is what an inspection can realistically do.

The checks are worth learning because a cake is a compressed object and much of what happened to it is visible on the surface. Mould, a bad press, careless storage and insect damage all leave marks.

The five checks

The face is the first. A good cake has an even colour with visible leaf and, in an aged cake, a deep brown tone. Patches of white or grey are mould, and a face that is uniformly pale suggests a young cake or one that has been steamed.

The edge is the second. A well-pressed cake has a clean edge that holds its shape. A cake that crumbles at the edge was pressed too dry, which means it will not age evenly.

The smell is the third and the most informative. A clean cake smells sweet and woody when dry, and the smell deepens after a rinse. A musty smell that does not clear after the rinse is mould, and no amount of age corrects it.

The weight is the fourth. A 357 gram cake that weighs 330 grams has dried out, which suggests storage in a dry room and little aging.

The sound is the fifth and the least used. A dull tap suggests a solid cake; a hollow one suggests a loose press or a gap inside, and both mean uneven aging.

What cannot be checked

Origin and age are the two claims an inspection cannot verify. A cake from a modest garden and one from a famous village look similar, and a cake stored for fifteen years and one darkened in a humid room look similar.

A buyer should therefore use the inspection to rule out faults and the producer to establish provenance. The two checks are complementary and neither replaces the other.

The inspection is also limited by the wrapper. A sealed cake in a shop can be looked at through a window or not at all, and an online purchase offers only a photograph.

That is why a sample is worth more than an inspection when it is available. Ten grams of a cake tells a drinker more than an hour with the wrapper.

How to inspect a cake you already own

Open the wrapper and smell the dry cake. Then break off a piece, rinse it and smell the wet leaf. Then brew three steeps and note the colour, the bitterness and the finish.

Look at the wet leaf after the third steep. A good cake shows whole leaf with some thickness; a poor one shows fragments and dust, which indicates coarse picking or a careless press.

Check the interior. A cake that is dark on the surface and green in the centre was pressed too hard or stored too dry, and the two halves of the cake will taste different.

That interior check is the reason to break a cake along its layers rather than across them, and it is the only way to see whether the press was even.

• Smell the dry cake, then the wet leaf after a rinse.
• Brew three steeps and note colour, bitterness and finish.
• Look at the wet leaf for wholeness and thickness.
• Check the interior for a green centre.
• Break along the layers to see the press.
• A cake that is dark outside and green inside was pressed too hard.

Storing what you have inspected

Once a cake is opened it changes faster, because more surface is exposed. A drinker who wants the cake to keep aging should leave it wrapped and break off pieces from one edge.

The broken piece should go into a small tin and be finished within a few weeks. The whole cake should stay in a dry, dark, ventilated place away from odours.

A cake that has been inspected and found sound should be recorded: the year, the producer, the taste at the first session. That note is the only way to know later whether the cake improved.

The record is also the only defence against a seller’s claim. A drinker who has notes from ten cakes can compare a new purchase against a reference rather than against a description.

• Smell the dry cake before anything else.
• Check the edge for crumbling.
• Weigh the cake against the stated figure.
• Tap it and listen for a hollow sound.
• Rinse a piece and smell the wet leaf.
• Break along the layers to see the interior.

The wrapper as evidence

A wrapper is printed paper and it is easy to replace. What it can still tell a buyer is whether the cake and the wrapper belong together: a wrapper that is newer than the cake, or a cake that does not match the printed weight, is a warning.

The printed information is worth reading for what it omits. A wrapper with a village name and no year, or a year and no producer, is a wrapper with nothing checkable on it.

Older wrappers are collected and reused, which is a known problem in the aged market. A pristine wrapper on an allegedly twenty-year cake is suspicious, because paper that old is usually stained and brittle.

None of that is proof. It is a set of signals that, taken together, tell a buyer whether to spend an hour with the cake or to walk away.

The five checks in order of usefulness

Smell comes first because it catches the one fault that cannot be fixed. A musty cake is a failed cake and there is no reason to inspect it further.

The face and the edge come next. They catch mould that the smell missed and a press that was too dry, and both are visible in seconds.

Weight and sound come last because they are the least decisive. An underweight cake has dried out and a hollow tap suggests a loose press, and neither rules the cake out on its own.

That order matters when a buyer is looking at several cakes in a shop. A minute of smelling will eliminate half of them and the rest of the inspection can be spent on the survivors.

The same order applies online, except that only the face can be seen. A photograph shows colour and structure and it shows nothing about smell or weight, which is why an online purchase is always a gamble.

What to do with a cake that passes

Buy one and taste it before buying more. A cake that passes inspection can still be thin or bitter, and the inspection only rules out the gross faults.

If it is good, buy a second from the same batch rather than from the same village. Two cakes from the same garden and year are comparable; two from the same village are not.

Record the batch, the price and the taste. A buyer with a record of what they paid and what they got is in a much stronger position the next time a seller makes a claim.

That discipline is the whole of buying pu-erh well, and it has nothing to do with expertise in tasting. It is a matter of checking what can be checked and recording what was found.

That is the whole of the inspection, and it is a modest tool. It catches the faults that are visible and it says nothing about the claims that matter most.

A buyer who uses it consistently will avoid the spoiled cakes and the badly pressed ones, which is most of what goes wrong at the cheaper end of the market.

A record of batches is the only defence against a seller’s claim about provenance, and it costs nothing to keep.

Prefer producers who state the picking year, the garden and the storage conditions, because those are the claims a buyer can test against a reference cake and a written note.

Frequently asked questions