Uji (Kyoto), Japan — shade-grown matcha tradition from 12th century Zen Buddhist introduction
Matcha (抹茶) is produced through a uniquely Japanese process that begins 3–4 weeks before harvest when tea bushes are shaded (using reed screens or black cloth) to stress the plant into producing more chlorophyll and L-theanine while halting photosynthetic sugar conversion — this creates the vivid green colour and the characteristic sweet-umami flavour. The shade-grown leaves (tencha), once harvested, are steamed immediately (not rolled like other green teas), dried flat, and then stone-ground into an ultra-fine powder (matcha) using slow-turning granite millstones at a rate of only 30–40g per hour. Quality indicators: vibrant green colour (dull olive indicates oxidation or poor growth); fine particle size (premium matcha should feel talc-smooth, not gritty); aroma (marine-vegetal-sweet, not grassy or bitter); and ceremonial vs culinary grade (ceremonial grade has more L-theanine, more complex flavour; culinary grade has higher catechin astringency suitable for baking where the flavour must stand up to heat and dairy).
Vivid, marine-vegetal-sweet umami with gentle bitterness in ceremonial grade; culinary grade is more intensely bitter and astringent — specifically designed to hold up in baked and dairy applications
Shading determines chlorophyll and L-theanine content; stone grinding preserves flavour compounds that steel blades would destroy through heat friction; water temperature for matcha preparation: 70–80°C (not boiling — hot water creates bitterness); chasen (bamboo whisk) creates the foam through M-shaped whisking motion that disperses the powder uniformly; premium matcha is consumed within 3 months of grinding (it oxidises).
The matcha preparation hierarchy: koicha (thick tea, 4g matcha per 40ml water — requires premium ceremonial grade, no foam — smooth paste) vs usucha (thin tea, 2g per 60–70ml — the standard bowl with foam from chasen whisking); in culinary applications, matcha's bitterness is desirable as a counterpoint to sweetness — higher catechin culinary grade holds up better to sugar and cream; Uji (Kyoto/Nara border) and Nishio (Aichi) are Japan's two most important matcha production regions — Uji is the ceremonial benchmark, Nishio the volume culinary benchmark.
Using boiling water (denatures delicate amino acids, creates harsh bitterness); not sifting matcha before preparation (clumps persist through whisking — sift through a fine mesh); storing matcha in a non-airtight container at room temperature (oxidises rapidly — store airtight in refrigerator or freezer); using culinary grade matcha for ceremony (unnecessarily expensive if baking; the subtlety is wasted when combined with cream and sugar).
The Japanese Kitchen — Hiroko Shimbo