No. 016 — Tea traceability, from plot to cup

TSURU COLLECTION • GUIDE NO. 016

When a Leaf Changes Hands Several Times

On a tea bag, a few words can give the impression of a perfectly clear path: a region, a garden, a harvest, sometimes a cultivar. Yet, between the plot and the cup, the leaves may have been plucked, gathered, weighed, processed, sorted, blended, packaged, exported, and then repackaged. At each step, their identity must be linked to the next.

This is the role of traceability: to reconstruct the documented history of a product, locate a batch, and, if a problem arises, quickly identify the products concerned. Having learned how to read the name of a tea, let’s now follow the leaf behind the label: what information really links a cup to a harvest, a factory, or a plot?

I. Traceability Is Not a Pretty Origin Story

The ISO 22005 standard presents food traceability as a tool for determining the history or location of a product or its components. In the European Union, Article 18 of the general food law regulation requires that food products be traceable at all stages of production, processing, and distribution. Each operator must be able to identify, at a minimum, their direct supplier and the businesses to which they have supplied their products.

This logic, often summarized as “one step back, one step forward,” links successive links in the chain. It does not mean that every player holds the entire history from the plot in a single document.

II. From Plot to Batch: The First Identifiers

The journey begins before the factory. In an estate organized by plots, a harvest can be associated with an area, a date, or a cultivar. For small producers, the unit being traced may instead be a group, a village, a collection route, or a delivery day. Both models can be traceable, but not with the same level of precision.

Fresh leaves change quickly after picking. They must therefore be weighed and sent to the factory without losing their link to their declared origin. An identifier, register, or delivery note can then link:

• the producer, garden, or collection point;
• the date and sometimes the time of receipt;
• the area or plot, when it is traced;
• the weight of fresh leaves;
• the type of leaves or picking standard;
• the processing batch to which they are assigned.

Displaying “single plot” only makes sense if the leaves remain separate and identified during subsequent operations.

III. At the Factory, Identity Must Survive Processing

Tea is not merely transported: it is processed. Withering, rolling, fixing, oxidation, drying, or fermentation changes the leaves according to the desired tea family. The factory must be able to link the materials received to the batches produced, even when the weight decreases significantly due to water loss.

A production batch may correspond to a day, a production line, or a defined quantity. Several inputs may be combined; the same harvest may also be divided. Traceability must therefore follow changes in identity: what input came in, in which batch, and what dried tea came out?

The harvest season provides a useful reference point, but “spring” remains less precise than a defined period or a batch number.

IV. Sorting, Grades, and Blending: When a Batch Is Divided or Mixed

After processing, tea can be sorted by size or appearance. The same production batch then yields several fractions. Each receives a grade or designation, but the link to the original batch must remain reconstructible.

As we saw in the Tsuru dedicated to grades, these categories primarily describe sorting. Here, they allow us to identify which fraction of a batch was packaged, sold, or blended.

Blending adds a step. The final mixture receives its own number, while its composition sheet must allow its components to be traced. Traceability does not necessarily disappear; it changes scale.

The Tsuru on the art of blending showed this: mixing is not hiding when the composition is controlled and documented.

V. From the Exporter to the Tea Bag: A Chain of Correspondences

Before arriving at a tea house, a batch may pass through an exporter, importer, or packager, then be divided and repackaged. Continuity relies on batch numbers, shipping documents, invoices, quantities, and internal references. The tea bag code may be assigned late; the essential thing is that the company can link it to its registers and its supplier.

Quantities must also remain plausible between receipt, division, and packaging. This check does not prove origin, but helps identify a break or an impossible declaration.

VI. What Traceability Allows — and What It Does Not Guarantee

Good traceability allows, among other things:

• to trace the immediate origin of a product and its business destination;
• to isolate the batches affected by a non-conformity;
• to organize a more targeted withdrawal or recall;
• to verify consistency between documents, quantities, and identifiers;
• to support an indication of origin, a certification, or a batch promise when additional rules require it.

Traceability does not automatically guarantee:

• that the tea is excellent;
• that you will like it;
• that it is fresh or well-preserved;
• that its production meets all possible social or environmental criteria;
• that every piece of internal information appears on the label;
• nor that a prestigious name is worth more than tasting the actual batch.

It first answers the question “can we reconstruct the path of this product?”. Quality, freshness, and production practices require other evidence.

VII. Reading a Label with the Right Level of Expectation

The consumer does not have access to all professional registers. They can, however, observe the level of precision offered and ask concrete questions.

A label or product sheet may mention several levels of information:

1. The identification foundation: type of tea, responsible operator, batch number, and regulatory information.
2. The origin context: country, region, garden, producer, or group of producers.
3. The botanical and temporal context: cultivar, season, date, or harvest period.
4. The processing context: tea family, method, factory, grade, or style.
5. The finest level: plot, picking day, micro-batch, quantity produced, or invoice identifier.

The more precise a piece of information is, the more it must be linked to a register. But the absence of a detail on the tea bag does not prove its absence in the chain: not everything traced internally is necessarily communicated.

The Tsuru No. 015 invited us to separate what the name asserts from what it suggests. A term like “garden,” “reserve,” or “micro-batch” must be questioned, never taken alone as a guarantee.

The Tsuru Experience

Take two tea bags and draw a seven-box chain for each:

1. plot or producers;
2. picking or collection;
3. factory;
4. production batch;
5. sorting or blending;
6. importation and packaging;
7. tea bag and batch number.

Fill in only the information that is actually available. Use one color for what is written on the tea bag, another for what appears on the product sheet, and a question mark for what is missing.

Then ask yourself: how far back can I go without assuming? Which link is the best documented? The goal is not to reward the most talkative label, but to recognize a coherent chain.

The Essentials to Remember

• Traceability links identifiers, documents, quantities, and successive players.
• The European rule requires that operators be able to identify their direct suppliers and business customers.
• Solid regulatory traceability does not necessarily trace back, in a single document, to a specific plot.
• A batch can be divided, sorted, or blended without losing its traceability if the correspondences are maintained.
• Traceability helps locate a product and take action in the event of a problem; it does not guarantee quality, taste, freshness, or ethics on its own.
• The more precise a claim is, the more it must rest on a suitable chain of evidence.

Traceability does not make a tea exceptional. It allows us to know which tea is actually in front of us.

In the next Tsuru…

Once the batch’s journey has been reconstructed, another question becomes decisive: what remains of its freshness when time, air, humidity, heat, and odors begin to act on the leaves?

The next Tsuru will follow the life of tea after its manufacture and explain how to distinguish freshness, proper storage, and a simple date printed on packaging.

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