Reads the sugar (Brix) in cherry juice with a refractometer to time picking or to accept, reject or separate lots by ripeness.
Some producers read the sugar in cherry juice with a refractometer, reported in degrees Brix, to decide when to pick and to accept, reject or separate lots by ripeness. Specialty-grade cherry commonly reads in the high teens to mid-20s. Brix reflects sugar concentration rather than ripeness on its own, so it complements picker judgment, and a past-peak cherry can also read high.
How it worksJuice squeezed from a cherry is read on a handheld refractometer, which reports dissolved sugar in degrees Brix. Producers use the number to time harvest and, at wet mills, to test arriving cherry and reject or separate lots below a minimum.
Step by step
- 01
Squeeze juice from sample cherries onto a refractometer lens.
- 02
Read degrees Brix (dissolved sugar) at roughly room temperature.
- 03
Delay picking, or reject or separate lots that fall below a chosen minimum.
History
The Brix scale originated in 19th-century wine assessment and is now used across food industries, including on coffee farms.
Our notes on Cherry Ripeness & Brix Sorting are still being checked against their sources, so for now this page shows only the facts we can stand behind.
What can go wrong
- Brix does not correlate perfectly with ripeness or final cup quality. Picker judgment is still needed, and past-peak cherry also reads high.
In the cup, according to guides
- SweetnessMoreProducers treat higher-Brix cherry as a marker of sugar available for flavor development and possible sweetness. The link to the cup is not tightly quantified.
Sources · 2 Every sentence here was checked against a source we read. Taste notes are what guides describe, not promises about your bag. Last revised 2026-09-30. Some details here are less settled than others.
- Brix in Coffee: Measuring Cherry Ripeness · Green Coffee Collective
- Brix readings for coffee: Everything you need to know · MTPak Coffee