by Ocha no Igetaお茶の井ヶ田
The 100g format of the line's top-end Hounsai-sosho-gonomi Uji tencha matcha, sold as a mellow koicha option.

Editorial verdict
Highest price and strongest prestige signal in the lineup, with per-gram pricing that clearly marks it as the flagship ceremonial offering.
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Mellow and rounded, with a softer koicha profile than Horai no Tsuru.
Other blends from Uji
Supports: Official shop lists Zuisen no Mukashi 100g at ¥18,360, describes it as carefully stone-milled Uji tencha, and says it is a mellow matcha suited to koicha.
About the brand
お茶の井ヶ田
Sendai tea company founded in 1920. Ocha no Igeta builds on long-standing tea sourcing relationships, then extends that heritage through retail tea, tea tools, and the Kikusuian confectionery and cafe format across eastern Japan.
View all Ocha no Igeta blendsMellow and rounded, with a softer koicha profile than Horai no Tsuru.
Zuisen no Mukashi 100g is sourced from Uji, Japan.
Zuisen no Mukashi 100g is priced at ¥18,360 for 100g (¥184/g).
Zuisen no Mukashi 100g is recommended for koicha. Thick tea — a concentrated preparation using about 4g of powder and 30ml of water, reserved for the highest-grade matcha.
You can buy Ocha no Igeta Zuisen no Mukashi 100g directly from Ocha no Igeta's official website. Current availability: out-of-stock.