No hot water touches plastic as part of the brewing process. It’s just like pour-over, for better or worse.
The Ratio Eight Series 2 is an exquisitely crafted appliance designed to deliver an uncompromising experience of a particular kind of morning coffee routine.
While other machines prioritize convenience or brew quality, the Ratio emphasizes the ritual and craft of the coffee-making process.
If you place a great value on avoiding plastic exposure, it may even be worth the $800 asking price — as long as you don’t try to compare it directly with other high-end coffee makers.
Author's summary: Review of the Ratio Eight coffee maker.