What makes a matcha suitable for koicha?
Koicha amplifies everything — the dense preparation fills your mouth, coats your tongue, and lingers. That's the point, but it means bitterness at 4 becomes undrinkable and thin body leaves you with something flat and chalky instead of enveloping. Six in-stock blends clear both bars (body 8+, bitterness 3 or below): Marukyu Unkaku ($1.58/g, body 9), Ippodo Ummon-no-Mukashi ($2.25/g, body 9), Marukyu Eiju ($2.28/g, body 9, bitterness 1), Ippodo Kuon ($3.20/g, body 9, bitterness 1), Kettl Shirakawa Asahi ($3.95/g, body 9), and Ippodo Kanza ($5.20/g, body 10, bitterness 1). Over 80% of blends in our database don't make it.
What is the most affordable koicha-suitable matcha in stock?
Marukyu Unkaku. $1.58/g, body 9, bitterness 2. The next entry point is Ippodo Ummon-no-Mukashi at $2.25/g — $0.67/g more for a near-identical profile. Most body-9 blends in our data cost at least $2.25/g. Unkaku's price is unusual. Marukyu owns their Uji gardens and mills; the margin that would otherwise go to a distributor shows up in the price.
What is the best koicha matcha regardless of price?
Ippodo Kanza ($5.20/g). Umami 10, bitterness 1, sweetness 10, body 10 — the only blend in our data that scores a clean 10 across all four dimensions. A single koicha session costs roughly $20 in matcha. Not a daily drinker; for when the preparation is the point. If that price isn't realistic: Marukyu Eiju ($2.28/g) scores bitterness 1 and body 9. The difference from Kanza is real — Kanza has a sweetness and density that's genuinely its own — but most people who taste both can't say what the extra $2.92/g bought them. Kettl Shirakawa Asahi ($3.95/g) runs more savory at thick preparation (sweetness 7 vs. Kuon's 9), for buyers who want less sweetness in the bowl.
Which matcha should you avoid for koicha?
Anything with bitterness 4 or above. That eliminates the entire latte and culinary tier, Ippodo Wakaki (bitter 7), and most everyday blends. Body 5–6 gives you thin koicha — not unpleasant, just wrong. Good usucha blends that don't belong here: Kettl Soukou (body 5), Ippodo Sayaka (body 6), Ippodo Ikuyo (body 5). Excellent thin tea, wrong bowl for thick preparation.