Kukicha

Where it grows

Country is the honest level — Japan is the level this record can honestly claim. Stems and leaf ribs sorted out during refining, pooled the same way. A named district would describe one lot in a blend of many.

How it is made, in order

Read top to bottom: the list is the production sequence, and the sequence is what makes this tea its category rather than a neighbouring one. The same leaf from the same bush becomes a green tea or a black tea depending on where the heat falls relative to the bruising, so reordering these steps would not vary the tea — it would produce a different one.

1. 1. Kill-green (fixation) — Denatures polyphenol oxidase and related enzymes, arresting enzymatic oxidation.
2. 2. Rolling and shaping — Ruptures cell walls to expose leaf juices, and forms the leaf into the shape it will hold through drying and storage.
3. 3. Drying — Reduces residual moisture to a level at which enzymatic, microbial and oxidative change effectively stops, stabilising the leaf for storage.

The route it is made by

The steps above are what happens; this is the named production route they belong to, with the other teas made the same way.

• Japanese steamed green tea — Fixation by steam within hours of plucking, then a rolling sequence that dries and shapes at once — and then a second factory that turns one intake into four named teas.

  Where it is practised: Almost all Japanese green tea. Also the route for Chinese steamed greens such as Enshi Yu Lu, which use the same fixation and none of the refining tail.

What its chemistry turns on

Every true tea contains caffeine, catechins and amino acids, so listing them would say nothing about this one. What differs is what the processing above does to them — and that is the same list of steps, read for its chemistry instead of its craft.

The compounds that substantially decide what this tea is: Caffeine, Free amino acids, L-theanine.

• Kill-green (fixation)
  • locks 2-Phenylethanol
  • locks Anthocyanins
  • locks Catechins
  • locks cis-3-Hexenol
  • locks Green-leaf volatiles
  • locks L-theanine
  • locks Leaf lipids
  • locks Methylated catechins
  • locks Theogallin
• Rolling and shaping
  • converts Leaf lipids
  • creates Theaflavins
  • raises Pectins
• Drying
  • creates Strecker aldehydes
  • raises Beta-damascenone
  • raises Thearubigins

These are statements about the leaf and the cup. What any of these compounds does in a body is a different kind of question and is not answered here or on the pages linked from it.

History

A by-product tea made from the stems sorted out of sencha and gyokuro, historically drunk by farming families rather than sold. It became a commercial product in its own right in the twentieth century, and karigane — the gyokuro-stem version — now sells at a premium.

TeaHQ synthesis — TeaHQ's own reading of well-attested general knowledge, with no single source behind it.

Brewing

• Western brewing (teapot or mug)

  1.5–2.5 g/100 ml · 70–80 °C · 1 authored infusion

  Needs: Western teapot

  Open in the brew assistant

• Kyusu brewing (Japanese style)

  3–5 g/100 ml · 80–90 °C · 3 authored infusions

  Needs: Kyusu

  Open in the brew assistant

• Gongfu brewing (gaiwan)

  3–4 g/100 ml · 75–85 °C · 4 authored infusions

  Needs: Gaiwan

  Open in the brew assistant

• Cold brew tea

  1.5–2.5 g/100 ml · 3–8 °C · 1 authored infusion

  Needs: Glass teapot

  Open in the brew assistant

Common mistakes

• Under-leafing it, since stems are bulky and a spoonful weighs little

When the cup goes wrong

Written against green tea as a category rather than against this tea in particular, and worked back from the symptom to the likely causes in order. 37 apply to the category; the first 6 are shown.

• I bought a big bag to save money and it was stale before I finished it — A large quantity bought at a good unit price faded well before it was drunk, so the saving turned into waste.
• I bought a water filter for my tea and it changed nothing — A filter jug or tap filter was bought specifically to improve the tea, and the cup tastes the same as it did before — with the same dullness, the same film and the same scale in the kettle.
• I have too many teas open and most of them are going stale — A dozen or more packets are open at once, three or four get drunk regularly, and the rest fade quietly on the shelf until they are thrown away.
• Leaves stick to the cup, the pot and my teeth — Fine leaf clings to the inside of the vessel, comes through into the cup, and ends up in the last mouthful.
• My bamboo whisk is losing tines — Fine bamboo tines snap off during whisking and turn up in the bowl, and the whisk feels stiff and splayed.
• My cold brew tastes like faintly flavoured water — After a night in the fridge the jug is pale and tastes of very little, with none of the sweetness cold brewing is supposed to give.

Every diagnosed brewing problem

If you like this

Grouped by why they were suggested, strongest reason first. Nothing here is a blended score — a suggestion appears under the best reason that exists for it, and never under a weaker one as well.

Compare this tea with another

Written comparisons

Where TeaHQ has set this tea against another in full, rather than deriving the comparison. Each one is a written page with the points of difference argued out.

• Karigane vs kukicha — Two names for stem tea, and one of them is used for both. What separates them is not the processing but where the stems came from — and that distinction is worth real money. Put the two side by side
• Kukicha vs hojicha — Two low-caffeine Japanese teas often recommended for the same reasons, made from different parts of the plant by different means. Put the two side by side
• Kukicha vs sencha — One is made from what the other discards, and it turns out to be considerably better than that implies. It is among the best-value teas in the Japanese range and one of the hardest to brew badly. Put the two side by side
• Sencha, kukicha, mecha, konacha and aracha: one line, five teas — Japanese tea manufacture is split between a grower who makes crude tea and a refiner who separates it. The separation does not produce one tea plus waste — it produces five products, all sold, all named, and priced in an order that has almost nothing to do with which is nicest. Put the two side by side

Guides covering this tea

• Exploring Japanese tea styles
• Caffeine as a flavour fact: what it contributes to the cup
• Old leaf, stem and stalk: the parts of the plant that are not the bud
• How one cultivar becomes three different teas
• Sugars, pectins and polysaccharides: the compounds behind texture