Usucha and Koicha Matcha: Two Ways to Read Texture

Usucha and koicha are two preparations of the same powder, and they are different enough to be treated as separate drinks.

The distinction

Usucha (thin tea) — roughly 2g matcha to 70ml water, whisked briskly to a fine foam. Light, frothy, and what nearly everyone means by "matcha".

Koicha (thick tea) — roughly 4g to 30ml, kneaded rather than whisked, producing something closer to a paste with no foam. Intensely concentrated, viscous, and traditionally shared from one bowl.

That is roughly a fourfold difference in concentration.

Technique differs, not just ratio

Usucha is whisked — a brisk W or M motion from the wrist, aerating to build fine foam.

Koicha is kneaded — slow, folding movements that incorporate the powder without introducing air. Whisking koicha vigorously produces a lumpy mess rather than a smooth paste.

The whisk is used differently for each, and stiffer chasen with fewer tines are traditionally preferred for koicha.

Quality requirements differ sharply

Usucha tolerates a decent mid-grade matcha. Its aeration and dilution soften astringency.

Koicha does not. At four times the concentration with no foam to lighten it, any bitterness is fully exposed. It requires genuinely high-grade matcha from young shaded leaves, and using culinary grade produces something close to undrinkable.

This is worth knowing before buying: koicha is an expensive preparation because it demands expensive powder.

Preparation notes for both

Sift the powder. Matcha clumps, and clumps do not disperse. Ten seconds through a fine mesh removes the most common complaint.

Water around 70-80C. Boiling water scorches matcha into bitterness, and this is the single most frequent error.

Soak the whisk in warm water first so the tines splay and do not snap.

Which to make

Start with usucha. It is more forgiving, more refreshing, and the preparation you will repeat daily.

Koicha is worth trying once you have good matcha and a feel for the whisk. It is a different experience — dense, sweet, savoury, closer to a broth than a drink — and it explains why the tea ceremony treats it as the more formal preparation.

Both are traditionally preceded by a sweet, which prepares the palate and makes the bitterness read as complexity.