Gyokuro Premium Shaded Green Tea

Japan — tea cultivation in Uji (Kyoto) from the Kamakura period (13th century); shading technique developed during the Edo period; gyokuro as a formal category established by Yamamoto Kahei VI in the 1830s in Kyoto

Gyokuro — Japan's most expensive and revered green tea — occupies a position in Japanese tea culture analogous to first-growth Bordeaux in wine: a product of specific terroir, exacting agricultural practice, and deliberate scarcity whose flavour profile is categorically distinct from standard green teas. The fundamental distinguishing technique is the shading of the tea bushes for 20 to 30 days before harvest — unlike standard sencha which grows in full sun — using straw, bamboo, or synthetic shading material that progressively reduces light exposure to 10–20% of full sunlight. This deprivation of light triggers two simultaneous chemical transformations that define gyokuro's flavour: (1) Theanine accumulation — the amino acid L-theanine (responsible for the characteristic umami sweetness and calming effect) cannot be converted to catechin astringency-compounds (epigallocatechin gallate, EGCG) without UV light; shading arrests this conversion and allows theanine to accumulate to levels 5–10 times higher than sencha; (2) Chlorophyll increase — without UV stress, the plant produces additional chlorophyll, deepening the leaves' colour and contributing to the extraordinary vivid jade-green colour of gyokuro liquor. The result is a tea with minimal astringency, maximum umami sweetness ('amami'), and a distinctive marine-vegetable aroma described as umi-no-ka (ocean fragrance) — iodine-adjacent seaweed notes that emerge specifically from gyokuro's unique chemical composition. Production is concentrated in three regions: Uji (Kyoto), Yame (Fukuoka), and Okabe (Shizuoka), each with slightly different flavour character. Brewing gyokuro requires low temperature (50–60°C rather than the 70–80°C of sencha) and small, concentrated infusions (5g leaf to 30ml water, 60-second steep) that produce an intensely flavoured, viscous tea more comparable to a broth than a conventional cup.

Intensely sweet umami with almost no bitterness or astringency; marine-vegetable (umi-no-ka) top note; deep jade colour; viscous, rich mouthfeel; lasts on the palate for extended minutes as theanine's calming character develops