Here's an updated manual pourover video. In the video I use a Kalita wave, but the technique can be used with any pourover brewer. I recommend focusing on the method more than the exact timing of the pours or total brew time. Different amounts of turbulence (due to different kettles, pouring rate, or pouring height), different grind quality, and different dry coffee doses will all influence optimal brew time. Generally speaking, finer grinds and longer brew times (up to 5:00) are beneficial, provided they do not result in astringency (dryness on the tongue).