The Perfect Pair.

Zerno Z1 + Ratio Eight

Precision Meets Craftsmanship.

Finally, a beautiful grinder designed and assembled in the USA. Only 5 Zerno Z1 Grinders available, exclusively bundled with the Ratio Eight.

A Very Limited Release.

Zerno grinders are celebrated among coffee enthusiasts for their unmatched precision and craftsmanship. Designed with premium materials and hand-assembled in Chicago, the Zerno Z1 Grinder has earned its cult-favorite status, with wait times to secure one often reaching 9-12 months.

For a limited time, Ratio offers exclusive access to five Zerno Z1 Grinders, bundled with the Ratio Eight brewer. This pairing is designed to elevate every aspect of your coffee ritual.

Zerno Z1 Grinder

Machined aluminum, walnut accents, micron-precision control, swappable 64mm burs, and near-zero retention ensure fresh, consistent grounds that highlight the best in every bean.

Ratio Eight Coffee Machine

Smart algorithms automate bloom and brew phases for perfectly extracted, pour-over quality coffee with the touch of a button.

This exclusive bundle ships out in January 2025 and is a rare opportunity to experience precision, craftsmanship, and the joy of exceptional coffee at home.