5-minute cold brew machine grinds and steeps on your tumbler

Ecoldbrew, which makes cold-brew coffee from whole beans in five minutes, is currently on Kickstarter.  Ecoldbrew – By Shirl Leigh 2026 Jan 22 – Ecoldbrew, engineered by a team of designers with experience working for brands like Xiaomi, Philips, De’Longhi and Ningbo Borine, is …