How the water enters the bed is half the recipe. Same coffee, same grind, same ratio — three pour techniques give you three different cups.
Spiral by default
A slow circle from the center outward, ending well before the edge of the filter. Every particle meets water the same way. It's repeatable, balanced, and the technique most filter recipes assume. If you don't know what to do, spiral.
When center makes sense
Pouring straight into the middle drives water through fast and leaves the edges less extracted. Cups come out lighter and more delicate. Useful when a coffee is dense and you want to back off.
When pulse pays off
Short pours separated by pauses. Water drains between each pulse, isolating aromatics and lifting the sweetness. Slower to brew, harder to mess up, and rewards careful timing. The Tetsu Kasuya 4:6 method is the canonical example.
What to avoid
Pouring on the filter wall, or pouring so fast you splash. Either lets water bypass the bed entirely — channels form, extraction goes uneven, and the cup tastes muddy without anyone knowing why.
Rinse the paper, or don't
Two camps. The traditional position: rinse the paper with hot water before adding coffee, both to seat the filter against the brewer and to remove papery taste. The minimalist position (Hoffmann): a modern paper barely tastes of paper, and a dry rinse with the brewer pre-warmed achieves the same seating with less waste.
In practice: rinse on Chemex (the paper is genuinely thick and noticeable). Optional on V60 / Kalita / Origami — try both with your current paper and decide. The seating effect is real either way; the taste effect is small.