Kyoto Food Meister Association

京都フードマイスター公式

MATCHA / PROTOCOLS


A Working Protocol To Verify Matcha

A practical guide for buying, serving, and explaining matcha.

MATCHA / PROTOCOLS is a practical, field-ready vocabulary for matcha verification.
It is designed for cafés, retailers, educators, and buyers who need a shared way to describe matcha—without turning culture into hype, and without reducing quality to “looks green.”

We don’t rank regions. We rank clarity.
Ask. Verify. Record.
Shade → Tencha → Grind → Pack → Ship → Serve.

This page is not a manifesto. It is a working protocol.

*One-page checklist (PDF)
*Download icons (zip)


Why this protocol exists

Matcha demand is rising worldwide. Along with it, the pressure on supply, pricing, and sourcing has increased. In that environment, “trust” can become emotional, visual, or performative—when it should remain explainable.

We believe that the most respectful path is not to rank origins, but to improve clarity:

  • clarity of process
  • clarity of handling
  • clarity of safety signals
  • clarity of what we can (and cannot) verify

This protocol is meant to be used quietly, every day, by professionals.


Scope: Matcha is a system

Matcha is not a single moment in a bowl. It is a system.

Shade
→ Tencha
→ Grinding
→ Packaging
→ Shipping
→ Storage
→ Serving

If quality is unclear, the cause is often found somewhere in this chain—sometimes far from the cup.


The core vocabulary

1) Ask

Start with intended use (latte / pastry / straight / retail). Everything else follows.
The simplest way to prevent confusion is to ask better questions.

Use a neutral tone. Avoid accusations. Aim for traceability.

2) Verify

Verification does not mean perfect proof.
It means confirming what can reasonably be confirmed, with documentation or repeatable signals.

3) Record

Records create continuity.
Not for surveillance—but for professionalism: the ability to explain, compare, and improve.


Protocol A — Trace & Identity

Start with intended use (latte / pastry / straight / retail). Everything else follows.

What is the tea base

A1. What is the tea base?

Ask

  • Is this matcha made from tencha?
  • Is the tea cultivar information available?
  • Is harvest season or harvest window known?

Verify

  • Product documentation (spec sheet, COA if available)
  • Lot ID / production code
  • Supplier consistency over time

Record

  • Product name + supplier name
  • Lot ID + receiving date
  • Storage start date

A2. Shade conditions (when known)

Shade is not just tradition—it is chemistry and taste structure.

Ask

  • Was the tea shaded? For how long (approx.)?
  • What shading method was used (when known)?

Verify

  • A simple statement from the producer or supplier
  • Consistency of taste profile across lots

Record

  • Any disclosed shade period or method
  • Notes on sweetness, umami, bitterness, astringency
Grinding & freshness

A3. Grinding & freshness

Grinding method and freshness shape aroma, color, and texture.

Ask

  • Grinding method (stone-milled or other)
  • Grinding date or “best by” basis

Verify

  • Lot-level information
  • Repeatable sensory observation (see Protocol B)

Record

  • Opened date
  • Oxidation notes over time (Week 1 vs Week 3, etc.)


Protocol B — Quality Observations (Quiet measurements)

Not a score. A shared memo your team can repeat.
This protocol avoids “good/bad” judgments.
Instead, it offers a set of repeatable observations that teams can share.

B1. Color (not as a score)

Color is a signal, not a guarantee.

Observe

  • Does the color shift quickly after opening?
  • Is there dullness or browning at the edges?

Record

  • Date opened
  • Visible shift after 24–72 hours (yes/no)
  • Storage conditions (sealed / refrigerated / frozen)

B2. Aroma

Aroma changes reveal oxidation and handling issues.

Observe

  • Fresh greens / sea breeze / nutty notes / stale notes
  • Does aroma fade rapidly after opening?

Record

  • “Day 1 aroma” vs “Day 7 aroma”
  • Any off-notes (cardboard, oiliness, staleness)

B3. Dispersion (mixing behavior)

Dispersion affects mouthfeel and bitterness perception.

Observe

  • Does it clump excessively?
  • Does it dissolve evenly in water?
  • Does a fine foam form naturally?

Record

  • Water temperature range used
  • Tool used (whisk / frother / shaker)
  • Visible clumping (low / medium / high)

B4. Texture (mouthfeel)

Texture is where matcha becomes unmistakably physical.

Observe

  • Silky / powdery / gritty
  • Clean finish vs lingering roughness

Record

  • Serving style (thin / latte / culinary application)
  • Notes from multiple staff members (not one opinion)


Protocol C — Lot-Level Safety Signals (Minimum practical checks)

Minimum: lot ID + label clarity + COA when available.
Safety is not a marketing claim. It is basic responsibility.

This section is intentionally minimal and realistic for small teams.

C1. Lot ID and trace continuity

Ask

  • Is there a lot ID / production code?
  • Can the supplier identify the batch?

Verify

  • Lot ID exists on packaging or invoice

Record

  • Lot ID + receiving date
  • Use-by or best-by date
Labeling clarity

C2. Labeling clarity (for resale or service)

Ask

  • Does the label clearly indicate matcha use category?
  • Any allergen handling or shared facility notes?

Verify

  • Packaging label + supplier documentation

Record

  • Photos of label
  • Any notes relevant to customers (non-medical)
COA

C3. COA (when available)

A COA is useful. If a COA isn’t available, record what you can verify—and decide whether that level matches your use case.

The key is consistent practice and transparent sourcing.

Ask

  • Is a COA available for this lot?

Verify

  • COA date aligns with the lot
  • Document looks consistent and readable

Record

  • File storage location (PDF link or folder name)
  • Which lot it applies to


Respect for other teas

The global rise of matcha affects more than matcha.

Supply pressure, price shifts, and attention can reshape the broader tea ecosystem.
This is exactly why clarity matters.

The goal is not to dominate the category.
The goal is to build explanations that can coexist with many regions, styles, and traditions.

We don’t rank regions. We rank clarity.


What this protocol is (and is not)

This protocol is offered as an open reference resource. It is not a set of rules or requirements.
If you’d like to collaborate, adapt, or formally implement this protocol in your work, you’re welcome to contact us.
We appreciate attribution to the original source when shared.

This protocol is:

  • practical
  • repeatable
  • non-accusatory
  • designed for daily use

This protocol is not:

  • a certification by itself
  • a guarantee of origin
  • a substitute for legal compliance
  • a tool to shame producers or sellers


Version history

  • v1.0 — 2026-01-30
  • v1.1 — planned Minor clarifications + expanded safety notes.
Published by

Kyoto Food Meister Association
Program: Kyoto Matcha Certification