From 2016 Dark matter group buy:
Tried this again, this time with a gaiwan much to the annoyance of my cat. She can’t sit on my lap while I fumble with my thermos and pouring and whatnot so she sat in another chair and glared at me until it was time to hold her again. Oh well
Used just under boiling water in a thermos so it gradually cooled as I went along. I lost count of the steeps but it was upwards of 10 to be sure. 1st steep was the same toasty flavor as last time. On the 2nd one I got a lot of char flavor and it was actually rather unpleasant. 3rd steep started to open up with the malty black tea flavor with the toast at the end. Subsequent steeps were similar with the toasty end becoming slightly astringent as well. At the end I was brewing multiple minutes and getting light yellow infusions. The toast was gone and it was now smooth and warm and sweet.
Well it’s probably a little too heavy on the roast for my tastes. The ending was a great experience however.