Home baristaship is getting more and more precise. This page will satisfy your coffee geekery.
POUR OVER KETTLES
In our cafes we use pour over kettles with "swans necks" to get closer to the coffee grounds. It means the water flows slowly through the coffee and doesn't jump through without extracting all those incredible flavour compounds.
They are by no means necessary. If you pour slowly and consistently you will get a good coffee. But swan neck kettles make it just that little bit easier.
Try it and you won't go back.