| Kaneko, Shu; Kumazawa, Kenji; Masuda, Hideki; Henze, Andrea; Hofmann, Thomas March 2006 | "Molecular and sensory studies on the umami taste of Japanese green tea" |
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| Unno, Keiko October 10, 2018 | Chagyo Kenkyu Hokoku Tea Research Journal |
5 g for the package and most tea masters considered that one package provided for 20 usucha about 1.
26| Journal of Cookery Science of Japan | Journal of Agricultural and Food Chemistry |
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| "Molecular and Sensory Studies on the Umami Taste of Japanese Green Tea" | ; Kuttan, Ramadasan; Nishigaki, Ikuo April 6, 2010 |
Matcha used to be sold in packages of 10 ancient measure of about 3.