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I wasn't sure what to think of this kettle when I first reviewed it. Looks: designer. Feels: tinny. And what's it for anyway? It seemed pointless.
I changed my mind. If you want to get good results from pour-over brewing, you need to control the flow of water, you need a tool to master a pouring technique. You will need this Buono stainless steel kettle. I looked for any other type of kettle that could do the same thing, and short of pinching the spout on my electric Pino kettle to be a bit narrower (it sorta works), the Hario Buono is it. Although we haven't tried it, Hario's website says you can heat it over an induction stovetop. We normally just transfer hot water into it right before pouring. If you choose to boil your water inside of the Buono, be careful, since we have heard of the spout turning into a water fountain if the kettle is left to over-boil .
If you want to brew in a Hario V-60 type dripper, or even in a Chemex, you should consider this. For good results you need to pre-wet the grinds for 30 seconds with a minimal amount of water, then begin a slow, even pour from the center outewards. It's best not to pour directly on the filter, and often I must pour in stops-and-starts to draw out the infusion time to around 2:00-3:00.
I find all that nearly impossible to do without the Buono. For brewing in other drippers and filtercone holders, Melitta etc. the Buono and some of the technique above will improve results. In a Clever Coffee Dripper it is unnecessary. YouTube is full of brewing videos, including a few pour-over brew videos of our own!