I noticed that Aeropress also have a cold drip attachment.
https://www.aeropress.co.uk/collections/shop/products/puckpuck

This caught my attention because years ago in Tokyo I sampled a cold drip coffee that was being offered in a Mitsukoshi department store to promote the coffee brand. It was an artistic, but Heath Robinson type affair, made using laboratory glassware, tubes, filters and such. I have often thought of building something to emulate it.

At the end the coffee was further chilled by being dripped into a flask with an external ice pocket. The sample I was given in a small paper cup had a dash of chilled cream added. It was absolutely delicious.

Peter

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