What Is Cupping in Matcha Evaluation
Cupping in this tea context means comparing samples through sensory observation. It has nothing to do with suction-based cupping therapy. The aim is to reduce preparation differences so that changes in the tea are easier to notice, not to make personal preference entirely objective.
Matcha is assessed as dry powder and as a whisked suspension. Unlike a strained leaf infusion, its ground leaf particles remain in the drink and do not completely dissolve. Marukyu Koyamaen describes evaluating tencha batches by appearance, flavor, aroma and color before blending; assessment can therefore happen at different stages of production.
The Cupping Process for Matcha
Choose one preparation recipe and apply it consistently across the samples. Keep powder mass, water volume and source, water temperature, bowl shape, whisking method and the delay before tasting alike. Record deviations instead of silently changing a difficult sample.
An example home comparison could use 2 g of each matcha with 70 ml of water at 75°C, prepared in matching bowls with the same whisking time. These are proposed comparison settings, not an official standard or an optimum for every matcha. Follow a supplier’s recipe for an initial familiarization tasting, then choose a shared recipe for comparison.
Timing and Environment
Use a space without competing food or fragrance smells. Label samples with neutral codes if you want to reduce brand and price expectations. Prepare a small set so that you can compare them at similar temperatures, and take breaks when flavors become difficult to distinguish.
A second pass as the teas cool can reveal different impressions. Record the elapsed time so that one freshly whisked sample is not compared unknowingly with another that has settled.
Sensory Evaluation Criteria
Note dry color and aroma, then the prepared tea’s aroma, sweetness, umami, bitterness, astringency, texture and aftertaste. Astringency is the drying sensation in the mouth, not simply another word for bitterness. Use concrete observations such as grassy, roasted or chalky rather than only a total score.
Foam, green color and smoothness are observations, not proof of cultivar, origin or a marketing grade. Sediment does not automatically mean failure: matcha contains suspended leaf particles. Record clumps separately from settling and compare with the preparation notes.
Grading Applications and Quality Benchmarks
Buyers can use consistent notes to compare lots or discuss suitability for plain tea versus milk drinks. If using a numerical scale, define its endpoints and keep the rubric fixed. A personal score expresses a result under those conditions; it does not certify safety, chemical composition or commercial grade.
No tasting has been performed for this guide. The suggested protocol is a practical way to organize your own comparison, not a report of tested samples.
Professional Standards and Certification
ISO 3103:2019 specifies preparation of tea liquor by infusing the leaf, according to its public scope. That is not the same preparation as whisked matcha, so it should not be cited as authority for the example above. If a competition, buyer or laboratory uses a matcha-specific protocol, name that protocol and follow it rather than calling any fixed recipe internationally standardized.
