ITADAKI ATLAS

Tea & drinks ── Nihoncha (Japanese tea)

Gyokuro

Gyokuro — tea shaded before harvest for a mellow umami

A premium tea made from buds shaded from sunlight for around 20 days before picking. Blocking the light is said to suppress astringent compounds while letting amino acids build up in the leaf, giving a seaweed-like aroma and concentrated umami.

  • Green tea

Lineage

Gyokuro

What it's made of

Buds grown under reed screens or shade cloth that block direct sunlight for about 20 days before picking. With photosynthesis suppressed, catechins (the astringent compounds) are said to decrease while theanine (the umami compound) stays in the leaf. Shaded teas share a seaweed-like aroma known as ooika, and gyokuro is known for a mellow, concentrated umami. The brewed liquor is said to be a clear, pale green with almost no astringency, filling the mouth with a concentrated umami reminiscent of dashi broth.

How it's made

After the labor-intensive shaded cultivation, the leaf is steamed to stop oxidation, then rolled and dried the same way as sencha. The long shading period and delicate leaf management are said to make gyokuro more costly and time-consuming than sencha. Brewed slowly at a lower temperature (around 50-60°C), its sweetness and umami are said to come through most. The shading is often applied in two stages — first a reed-mat frame, then a layer of rice straw on top — with the exact number of days said to shift depending on cultivar and weather.

Why it took this shape

In the late 16th century, a shading technique called ooshita saibai — covering the tea garden — is said to have emerged in Uji and spread as a method permitted only there. By the end of the Edo period, gyokuro — leaf from this shaded cultivation finished the same way as sencha — is said to have been created, arriving as the high point of shaded growing and establishing its place as a premium tea. Uji sits in a basin ringed by mountains where morning fog is said to form readily, and this humid air is said to have played a role much like shading in softening direct sunlight.

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