The right matcha-to-water ratio

Use 1 tsp (2 g) matcha to 2 oz (60 ml) water for thin (usucha), or 4 g to 1 oz for thick (koicha). Latte and troubleshooting ratios inside.

By PGP Iyer · July 28, 2026 · 6 min read

For a standard bowl of thin matcha (usucha), use 1 teaspoon (2 g) of matcha to about 2 oz (60 ml) of water at 176°F (80°C), whisked about 15 seconds. For thick matcha (koicha), use 4 g of matcha to about 1 oz (30 ml) of water. For a latte, Ippodo Tea's own recipe whisks 3 g into about 3.4 oz (100 ml) of water, then stirs in about 3.4 oz (100 ml) of warm milk.

Usucha, koicha, and latte ratios at a glance

These figures come from Ippodo Tea, a Kyoto tea house whose usucha, koicha, and latte recipes are published with exact gram and milliliter measurements — the same convention this page uses throughout. Healthline's general matcha guidance gives the same ratios in teaspoons — about 1 teaspoon per 2 oz for a standard cup and 2 teaspoons per 1 oz for koicha — though it expresses matcha only in teaspoons, not grams.

Usucha and koicha aren't different teas — they're the same matcha at two concentrations. Koicha packs twice the powder into half the water of usucha, which is why it's mixed (not whisked to a froth) into a thick, paste-like tea rather than a light, frothy bowl. A latte starts the same way — a small hot slurry whisked to dissolve the powder — before milk is stirred in, so the ratio above really governs the concentrate; milk volume can be adjusted to taste once the slurry is right.

Getting the ratio right changes texture and taste, not the tea itself: too much water and usucha tastes thin and grassy instead of rounded; too little and it turns gritty and intensely bitter before heat even enters the equation. That's why a Japanese tea house like Ippodo publishes gram measurements rather than a loose "a spoonful" instruction — the ratio is the recipe.

Why matcha ratios vary online

Search around and you'll find matcha ratios ranging from 1/2 teaspoon to 2 teaspoons for what's called a "standard" cup, plus latte recipes that swing anywhere from a small slurry-sized pour to nearly a full cup of milk. Most of that spread comes from house style rather than error — a café pouring a bigger, milkier latte isn't wrong, it's just a different drink than a traditional bowl of usucha. This page standardizes on Ippodo Tea's published recipes throughout, cross-checked against Healthline's general guidance where the two overlap, so the ratio, temperature, and time referenced in every section — and in the embedded tool above — come from the same dataset rather than drifting from one section to the next.

Iced matcha and iced lattes use the same ratio

Ippodo's iced recipes don't change the matcha-to-water ratio — they just chill it. Iced matcha (no milk) uses the same 2 g of matcha whisked into 2 oz (60 ml) of 176°F water as hot usucha, with 1–2 ice cubes stirred in at the end to cool it quickly. The iced matcha latte uses the same 3 g / 3.4 oz (100 ml) hot slurry as the hot latte, poured over 3.4 oz (100 ml) of cold milk and ice in a glass rather than stirring in warm milk. In both cases the water used to dissolve the matcha stays hot — matcha doesn't dissolve well in cold water alone, so the slurry step happens at the same 176°F regardless of how the finished drink is served.

Why water temperature matters for this ratio

Ippodo's usucha, koicha, and latte recipes all specify the same water temperature: 176°F (80°C), just off a full boil. That's warm enough to dissolve matcha's fine, stone-ground particles into the water without leaving it gritty, but cool enough to avoid scorching the leaf, which is what makes matcha taste sharply bitter. Healthline's more general matcha guidance lands a little cooler, around 158°F (70°C) — a genuine difference in convention rather than an error in either source, the same kind of honest variance you'll see across brewing guidance for other tea types (see our tea brewing temperature guide for the full chart). No thermometer? Let a full boil sit off the heat for 60–90 seconds before pouring — close enough to either target for a home cup.

Converting teaspoons to grams (and why a scale helps)

Ippodo's own recipes state matcha by weight first — 2 g for usucha, 4 g for koicha, 3 g for a latte — with a teaspoon or bamboo-scoop count listed second, as the everyday equivalent: 1 level teaspoon for usucha, 2 level teaspoons for koicha. That ordering is a hint. A level teaspoon can look full and still hold a different amount depending on whether the matcha was sifted first (lighter, fluffier) or scooped straight from the tin (denser, more compact), so "1 teaspoon" from one bag of matcha isn't guaranteed to weigh the same as "1 teaspoon" from another. A kitchen scale that reads in single grams removes that variable and is the more repeatable way to hit any of the ratios on this page — especially koicha, where doubling the powder without doubling it precisely throws off the whole cup.

Ippodo's recipes also reference a bamboo tea ladle (chashaku), the traditional scoop used in Japanese tea preparation: about 1.5 heaping ladles for usucha, 3 heaping ladles for koicha, and 2 heaping ladles for a latte. Like teaspoons, ladle counts vary with how full each scoop is packed — which is exactly why Ippodo lists the gram weight first in every recipe and the scoop count second.

Troubleshooting: clumpy, bitter, or watery matcha

Most matcha problems trace back to one of the numbers above — water temperature, powder amount, or water amount — rather than a flaw in the matcha itself. Check these four first:

• Clumpy or gritty: Every one of Ippodo's recipes starts with the same first step — sift the matcha before adding water. Skipping this is the most common cause of lumps; matcha is a fine powder that compacts in storage and won't fully dissolve without being broken up first.
• Bitter: Usually one of two things: water hotter than the 176°F (80°C) range above, which scorches the leaf, or more powder than your water ratio calls for, which concentrates the bitterness. Check both before assuming it's the matcha itself.
• Weak or watery: The reverse problem — too little matcha for the water, or water poured past the ratio (more than 2 oz for usucha, more than 1 oz for koicha). Weigh the water as carefully as the powder if this keeps happening.
• Foamy vs. not foamy: Usucha is whisked briskly to a light froth; koicha is deliberately mixed, not whisked, so it stays a smooth paste rather than foaming — that's the recipe working as intended, not an error.

For more on matcha itself — grade, sourcing, and how usucha and koicha fit into the wider picture — see our complete matcha guide. For how much caffeine these ratios translate to, see how much caffeine is in matcha.

This describes published preparation guidance and general information, not medical or dietary advice.