Cov khoom siv raw ntawm matcha yog ib hom tshuaj yej me me uas tsis tau dov los ntawm atshuaj yej rolling tshuab.Nws muaj ob lo lus tseem ceeb hauv kev tsim khoom: npog thiab steaming.Txhawm rau tsim cov matcha zoo, koj yuav tsum tau npog lub caij nplooj ntoos hlav tshuaj yej nrog cov ntaub qhwv thiab cov ntaub qhwv straw 20 hnub ua ntej xaiv, nrog rau qhov ntxoov ntxoo ntau dua 98%.Yog tias npog nrog cov ntaub qhwv yas dub, qhov ntxoov ntxoo tuaj yeem ncav cuag 70 ~ 85%.Kev sim tau ua pov thawj tias kev siv cov khoom sib txawv thiab cov xim rau ntxoov ntxoo muaj qhov sib txawv.

"Npog thiab shading hloov ib puag ncig yam xws li lub teeb siv, lub teeb zoo, kub, thiab lwm yam, yog li cuam tshuam rau kev tsim cov tshuaj yej aroma zoo.Open-air tshuaj yej tsis muaj B-santalol.Ntxiv nrog rau cov ntsiab lus siab dua ntawm qib qis aliphatic tebchaw, cov ntsiab lus ntawm lwm cov tshuaj tsw qab kuj qis dua cov tshuaj yej ntxoov ntxoo ".Lub chlorophyll thiab amino acids ntawm cov tshuaj yej ntsuab npog av los ntawmmatcha grinderyog nce ntxiv.Cov carotenoids yog 1.5 npaug ntawm qhov qhib-cua cog qoob loo, tag nrho cov amino acids yog 1.4 npaug ntawm natural light cultivation, thiab chlorophyll yog 1.6 npaug ntawm natural light cultivation.

Cov nplooj tshiab tshiab tau khaws thiab qhuav rau tib hnub, siv asteam tshuaj yej fixation tshuab.Thaum lub sij hawm steaming txheej txheem, cis-3-hexenol, cis-3-hexene acetate, linalool thiab lwm yam oxides nyob rau hauv cov tshuaj yej nplooj nce ho, thiab ib tug loj npaum li cas ntawm A-ionone thiab B-ionone raug tsim.Ketones thiab lwm yam ionone tebchaw, cov precursors ntawm no aroma Cheebtsam yog carotenoids, uas pab txhawb rau tshwj xeeb aroma thiab saj ntawm matcha.