Hojicha roasting

The categories this step defines

In tea, processing is not a modifier applied to a category — it is what creates the category. These are the types that exist because this step exists.

• Green tea — Kill-green (fixation) applied before meaningful oxidation can develop.

What it is

Hojicha roasting sits apart from the oolong roasting tradition because of what it is doing. Charcoal roasting of yancha is a finishing step that develops a tea already made to be roasted; hojicha roasting takes a finished sencha, bancha or stem tea and drives it to a temperature high enough that the marine and vegetal character is destroyed outright and replaced with toast, caramel and woodsmoke. It takes minutes in a rotating porcelain or metal drum, the leaf turns from green to reddish brown, and the process is irreversible in a way that a light roast is not. Its origins are conventionally placed in 1920s Kyoto as a way of using leaf that would otherwise have been sold cheaply, and it has since become a staple in its own right rather than a salvage route.

Also transliterated as: hoji, houji.

What it does to the leaf

Applies high, brief heat to finished green tea, driving thermal browning reactions that replace its existing aromatic profile rather than adding to it.

What it does to the cup

Roasted grain, caramel and toasted wood in place of marine and grassy notes; also strips much of the astringency, which is why hojicha brews forgivingly at high temperatures.

Variants that matter

Ways this step is carried out that produce genuinely different results, rather than regional names for the same thing.

Leaf hojicha

Made from bancha or sencha. Fuller-bodied, with more of the base tea still detectable underneath the roast.

Stem hojicha (kuki hojicha)

Made from the stem fraction separated during de-stemming. Lighter, sweeter and paler, and the version most people meet first.

Roast depth

A light roast leaves recognisable green tea character; a dark one leaves almost none. Both are sold as hojicha and they are not close to each other.

Other steps at the Roasting stage

• Charcoal roasting — Slow roasting over charcoal in baskets, in repeated sessions separated by weeks of resting.
• Electric baking — Roasting in a temperature-controlled electric oven rather than over charcoal.
• Final firing (hiire) — The last heat a Japanese green tea receives, applied at the refiner rather than the grower, and the lever that decides whether a sencha reads as fresh and grassy or sweet and toasted.
• Re-firing — A light low-temperature bake applied to already-finished tea to drive off absorbed moisture.
• Resting between roasts (tui huo) — Weeks or months of doing nothing between one roast and the next, during which the raw fire note recedes and the maker finds out what the roast actually did.
• Roasting — Applying sustained heat to finished leaf to build toasted character, reduce moisture and stabilise the tea for keeping.

Guides covering this step

• What heat does to a tea leaf, from ambient to char — Almost every operation in tea manufacture is a decision about temperature. Reading the whole process as one ladder of heat — from a wither at room temperature to a roast that chars — makes the reasons behind each step visible at once.
• Teas made from finished tea — Jasmine tea, hojicha, shou pu-erh and the Fu brick all begin with a completed, saleable tea and then do something else to it. That is where the six-category scheme starts to creak, and the creaking is informative.