Matcha Production Uji Tencha Shade Growing

Uji, Kyoto Prefecture — primary production origin; Nishio, Aichi secondary; shading technique developed Kamakura period

Matcha production is a uniquely labor-intensive and carefully orchestrated multi-stage process that transforms shade-grown green tea (tencha) into the finely stone-ground powder used in tea ceremony and culinary applications — with the shade-growing stage being the most critical and production-differentiating element. Twenty-one days before harvest, tea gardens are covered with progressively denser reed screens and black fabric until light is reduced to approximately 5% of full sun intensity, triggering amino acid (L-theanine) accumulation as the plant compensates for photosynthesis reduction by inhibiting chlorophyll breakdown and converting L-theanine to catechins. This process intensifies the green color (chlorophyll preservation), amplifies the characteristic umami-sweetness (L-theanine), and reduces the bitterness and astringency that would develop under full sun. Post-harvest, steamed leaves are dried as tencha (destemmed, devein), then stone-milled at temperatures below 40°C at a rate of approximately 40g per hour — the slow granite wheel grind producing the characteristic fine particle size (2-20 microns) and heat-avoiding preservation of volatile aromatics that distinguish properly made matcha from spray-dried alternatives. Uji (Kyoto Prefecture) and Nishio (Aichi Prefecture) are Japan's primary matcha production regions with distinct terroir profiles.

Intensely umami-sweet with deep vegetal-oceanic character; higher grade = more sweetness and less bitterness; bright grassy note with lingering amino acid sweetness (umami finish)