My tea timer on my phone told me to make this using 70degC water and to steep for 2 mins. I usually use slightly hotter water and am careful with the timings because any more than a minute makes it horribly bitter.
It was a bit of a pain to get water at 70degC and I ended up mixing together hot and cold water to get the right temperature, but I followed the instructions precisely, even heating the mug (I made it with a tea ball) to make sure it was right.
The result was a better cup of sencha than I have had for a long time, a fuller taste without being bitter.
I’m learning….