I'm in love with Tetsu Kasuya's "god recipe" using a Hario Switch:
. 18g coffee ground fairly fine
. 300g water
. Start with Hario Switch open
. 0s - pre-pour to 60g
. 30s - 2nd pre-pour to 120g
. 1m 15s - CLOSE HARIO SWITCH pour to 300g and let the brew immerse
. 2m - OPEN HARIO SWITCH and let drain
. 3m or so - if grind is correct drain should complete
Swirl / stir and serve.
(Note: Kasuya says 20g but 18g gives you 60g per litre - obvs vary to taste / grind / beans)