Melitta, Hario and various others offer pour-over cone things made out of ceramic. I agree I’d prefer that to a plastic one as anything involving plastic and boiling water seems like a bad idea to me.
I prefer the glass versions to ceramic, as ceramic really sucks the heat out of the slurry. Hario has a beautiful glass v60. Also I have the new glass Orea V3 flat bottom brewer.
One of the advantages of plastic is it's really low thermal conductivity compared to even glass. You're right about glass vs ceramic. Ceramic is about 100x more thermally conductive than glass. Ranked by least thermally conductive to most it's plastic, glass, stainless steel, and ceramic. Each is roughly an order of magnitude greater than the previous.
Of course you can overcome this with anything by warming it before use.
Does it have to be a cone? You could use a phin instead. Cheapest ones are aluminum, better quality is stainless.
Kalita wave!
100% agree. The proprietary filters are annoying, but after breaking multiple ceramic drippers there's no substitute for stainless steel.
I use the Hario Switch almost exclusively for pourovers. It's glass plus you can throw in immersions with it. Bit spendy compared to the plastic cones though.
Kalita Wave Tsubame Copper Dripper wave if you want flat bottomed and something more robust than glass. Otherwise I like my Hario Switch bu the base is like rubber so not all glass. Otherwise if you want 100% glass then the orea comes as glass now, super flexible for filter paper types as well if you get the negotiator to go with it.
I use a ceramic Hario v60. No complaints.
I use a ceramic bee house e.g.: https://www.amazon.com/Bee-House-Ceramic-Coffee-Dripper/dp/B0047VUNVE
Been using it for years without issue but I think ultimately not terribly different from a v60 other than it's easier to see your drip rate.
We mostly use this glass one by Hario: https://a.co/d/7HmId8E The plastic handle comes off for easy cleaning and does not come into contact with liquids during use. I imagine that the ceramic ones that others have mentioned would be similarly good
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