I tend to steep Asamushi a tad longer than fuka and chu. 1 min to 1.5 first steeps are normal for me with these. at 1 min..nice balance of sweetness and astringency. Good umami here.
2nd steep 30 seconds. 3rd steep 1-1.5min, 4th steep + 2 min.
Preparation
155 °F / 68 °C
1 min, 0 sec