Gyokuro: Japan's Shaded Green Tea and How to Brew It

Gyokuro (玉露, "jade dew") is Japan's most prized leaf green tea. The bushes are shaded for about three weeks before the spring harvest, which keeps more L-theanine in the leaf and cuts bitterness, so the tea is sweet, thick and deeply savoury, almost like a light seaweed broth. It's steamed and rolled like sencha. The trick is to brew it cool and concentrated: lots of leaf, a little water at 50–70 °C, and about two minutes for the first infusion. The best-known regions are Uji (Kyoto) and Yame (Fukuoka).

Why your first gyokuro tasted like expensive grass#

Brewed with sencha instructions and 80 °C water, gyokuro gives a sharp, bitter cup. Hot water destroys exactly the sweetness you paid for.

Cool the water to around 55 °C and use a tiny pot, and you get a thimble of thick, sweet, savoury liquid that coats the mouth. It's meant to be concentrated and drunk in sips, so more water doesn't help. Gyokuro rewards patience more than most teas.

Three weeks in the shade#

Before the spring harvest, the bushes are covered for about three weeks. Traditionally that meant reed and straw; now it's often black cloth. Only the young spring shoots are picked, and from there the leaf is steamed, rolled and dried as for sencha.

The shade is what makes the difference. With less sunlight, the leaf keeps more L-theanine (sweet, savoury) and makes fewer catechins (bitter, astringent). It turns a deeper green and develops a distinctive aroma, sometimes called "shade aroma."

So it isn't just expensive sencha. The shading changes its chemistry and its taste, and kabusecha sits halfway between the two.

Seaweed, steamed greens and a long sweet finish#

There's very little bitterness when it's brewed right.

Lots of leaf, a little cool water#

1. Cool the water by pouring it between vessels. Boiling water poured into a cup, then into another, drops about 10 °C each time.
2. Steep without moving the pot.
3. Pour out every drop into small cups.
4. Re-steep hotter and shorter.

A small handleless houhin, made for low temperatures, or a small kyusu is ideal. Gyokuro also makes one of the best cold brews there is (see cold brew tea).

And when the pot is spent, don't throw the leaves away yet. Many people eat them with a little soy sauce or ponzu.

Buying it, and keeping it sweet#

Gyokuro is sometimes blended with cheaper leaf, so a trustworthy seller and a stated harvest year matter. Look for a named region (Uji or Yame are the classics), glossy, deep green needles, even and whole, and a sweet, seaweed-like smell in the bag.

Keep it airtight, dark and cool, in small packs. An unopened pack can go in the fridge, but let it warm up before opening to avoid condensation. Once it's open, drink it within a month or two; the general rules are in how to store tea.

Gyokuro is a tea for slow mornings. Brew a tiny amount cool and pay attention. It's one of the most savoury teas there is, and a great lesson in how much temperature matters. The other Japanese teas are in my Japanese tea guide.