Kev sib tsoo yog qhov tseem ceeb tshaj plaws hauv cov txheej txheem ntawm kev ua matcha, thiab a pob zeb matcha tshuaj yej zeb tshuab yog ib qho cuab yeej tseem ceeb rau kev ua matcha. Cov khoom siv raw ntawm Matcha yog ib hom tshuaj yej me me uas tsis tau dov. Nws muaj ob lo lus tseem ceeb hauv kev tsim khoom: npog thiab steaming. 20 hnub ua ntej lub caij nplooj ntoos hlav tshuaj yej tuaj tos, scaffolding yuav tsum tau teem, npog nrog reed curtains thiab straw curtains, nrog ib tug shading tus nqi ntawm ntau tshaj 98%. Kuj tseem muaj cov ntaub npog yooj yim, uas tau npog nrog cov ntaub qhwv yas dub, thiab qhov ntxoov ntxoo tuaj yeem ncav cuag 70 ~ 85%. Cov 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, thiab kub, yog li cuam tshuam rau kev tsim tshuaj yej aroma zoo. Open-air tshuaj yej tsis muaj B-santalol. Ntxiv nrog rau cov ntsiab lus siab ntawm qib qis aliphatic tebchaw, lwm yam aroma Cheebtsam Cov ntsiab lus yog qis dua li cov tshuaj yej ntxoov ntxoo ". Cov chlorophyll thiab amino acids ntawm cov tshuaj yej ntsuab npog tau nce ntau. 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. Ua li no, cov tshuaj yej ntsuab grinded los ntawm lubTshuaj yej nplooj Grinder saj zoo dua.

Cov nplooj tshiab tshiab tau khaws thiab qhuav rau tib hnub, siv aTshuaj yej Steaming tshuab. Cov kev tshawb fawb tau pom tias thaum lub sij hawm steaming txheej txheem, cis-3-hexenol, cis-3-hexene acetate, linalool thiab lwm yam oxides nyob rau hauv tshuaj yej nce ho, thiab ib tug loj npaum li cas ntawm A-ionone, B-ionone thiab lwm yam ionone compounds, lub precursors. Ntawm cov khoom xyaw aroma no yog carotenoids, uas pab txhawb rau qhov tshwj xeeb aroma thiab saj ntawm Matcha.