So after the first 2 steepings yesterday, I filled the 12oz kyusu with ice and let it sit all day. The resulting (room temperature by the time I got to drink it) infusion was delicious!
A little creamy, not overly sweet, just right!
I tried another steeping (4th) afterwards, 180 for 30 seconds. It was more subdued but good. I’m going to give it an initial rating, but perhaps I’ll adjust it up or down after more trials.