Professional Evaluation Criteria for Matcha

Professional tea masters assess matcha through color, aroma, taste, and texture. The sensory indicators that define high-quality matcha.

By Kosuke Mori · December 17, 2025

How tea masters evaluate matcha

Professional tea masters evaluate matcha by combining the following sensory indicators.

Color tone

Vibrant green without dullness is highly rated. Those with strong yellowish tints receive lower ratings.

Aroma

Those with a clear and rich aroma (ooi-ka/covered aroma) are highly rated. Grassy or burnt odors result in lower ratings.

Taste

Rich umami (derived from theanine) should be felt, with bitterness and astringency well-balanced and restrained.

Particle size and texture

Fine and smooth powder is an evaluation point for professionals, and it also contributes to foaming and texture.

Integrating the criteria

As an overall evaluation, these multiple sensory elements are integrated, and the manufacturing process and storage conditions are also taken into account.[8]

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FAQs

Through four sensory indicators: color tone (vibrant green without dullness scores high), aroma (clear ooi-ka covered aroma scores high), taste (rich umami from theanine, balanced bitterness and astringency), and particle size and texture (fine, smooth powder is preferred and supports foaming). Manufacturing process and storage conditions are also weighed.

Vibrant green without dullness. Strong yellowish tints score lower in professional evaluation because they indicate insufficient shading, oxidation, or age.

Fine, smooth powder is an evaluation point for professionals. Smaller, more uniform particles affect both texture in the mouth and the matcha's ability to foam properly when whisked.