Pour technique gives you the default and tells you when to break it. This article is about the thing that gets missed once you're past the default: pouring is really two decisions, not one.
The shape you trace — centre or spiral — and the rhythm you pour it in — one continuous stream or a series of pulses — are independent. You can pour a spiral continuously or in pulses; you can pulse into the centre. Most people conflate them, which is why "I switched to pulses" often means three things changed at once.
Center pour
Water lands only in the center of the bed. The grounds in the middle extract more, the rim less. Used for the bloom (where you want to wet everything fast without disturbing the bed too much) and for some Japanese-style competition recipes that want a dome shape at the end.
Useful when you want minimum agitation. Risky as a main pour because the rim ends up under-extracted.
Spiral
Water moves from center to edge in a continuous spiral, then back to center. This is the workhorse pattern. It distributes water evenly across the bed surface, which is what you want for an even extraction.
The trick is keeping the spiral flat. If your kettle dips and rises, the bed dries unevenly and channels form. Aim for a metronome-steady wrist, slow enough that you can keep the stream pencil-thin.
Pulse (a rhythm, not a shape)
Pulsing is about when you pour, not where: several short pours instead of one long continuous one — typically 3–5 pulses per brew — and you can pulse a center pour or a spiral. Between pulses, the bed drains a bit, so each new pour hits a slightly drier bed. The result: more agitation per ml of water, more extraction per minute, and a body that sits between continuous-pour and immersion.
Pulses are the right choice when:
- The coffee tastes under-extracted and you've already pushed grind, ratio, and temperature.
- You're using a deep-bed brewer (Cafec Deep, Origami) where continuous flow under-shoots the bottom.
What to avoid
- Hitting the wall: water that lands on the paper instead of the grounds skips extraction entirely. Stay 5mm from the rim.
- Pouring too tall: kettle held high makes the stream wider and more turbulent. Closer = thinner = more controlled.
- Stop-go-stop within a single pour: that's not a pulse, that's a stutter. Decide before you pour: is this one continuous spiral or three pulses? Pick one.
