1. Cold brewing in glass. 2. Pourover via glass/ceramic/titanium vessel. These are the only present realistic options AFAICT. Cold brew is far in the lead. Especially done directly in milk.

The proud italian in me hearing this news https://blossom.primal.net/e3764928e5af3f1aced083a196e52eada589475c881a879ccec2d28d4b985c39.jpg