Matcha is what Japan exports. Sencha is what Japan drinks. The gap matters because they are made completely differently, and the leaf tea side needs almost none of the equipment matcha does — but it does need a teapot that pours properly and one habit most people abroad have never been told about.
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If you buy two things
A kyusu and a bag of hojicha. Hojicha tolerates boiling water and short attention, so it will not punish you while you learn the pot. Move to sencha once the pot is familiar.
Kyusu, or the teapot I already own?
Your teapot will work if it has a wide filter or none at all. It will not work well if it has a small metal ball or a narrow spout basket — Japanese leaf triples in size and needs the whole pot. That is the only real requirement.
Loose leaf or tea bags?
Bags are entirely normal in Japan and nobody here considers them a compromise for weekday tea. Loose leaf is better and the gap is smaller than tea shops imply. Start with whichever you will actually use.
What is the second brew rule?
Pour the pot completely empty every time, down to the last drop. Any water left sitting on the leaf keeps extracting, and by the second brew it has turned bitter and astringent. In Japan this is taught as a fixed habit, and it is the single biggest reason a second cup tastes wrong abroad.
How long do I steep sencha?
About 60 seconds for the first brew at 80C. The second brew takes almost no time at all — pour the water in and pour it straight back out, because the leaf is already open. Steeping the second brew as long as the first is the other common mistake.
Why is my green tea bitter?
The water was too hot. Sencha wants 70 to 80C, and boiling water pulls out catechins and caffeine that the lower temperature leaves behind. Either use a yuzamashi, or pour the boiling water into the cups first and then into the pot — that loses roughly the right amount of heat.
How many times can I brew the same leaf?
Two properly, three at a push. The second brew is often considered the best one here. After the third, the leaf is finished — and in Japan the spent leaf is sometimes eaten with a little soy sauce rather than thrown out.
Does Japanese tea have caffeine?
Sencha does, roughly half a cup of coffee. Gyokuro has considerably more. Hojicha has very little because roasting breaks down the caffeine, which is exactly why it is the evening tea here.