Roast Lab
Roast Lab
Open machine status & weekly available capacity
We openly publish our roaster timeslots, capacity and fee structure so partner brands and baristas can directly see next week’s available volume and the trial-roast process.
ONGU Roast Lab uses commercial-grade hot air roasters paired with cupping notes and curve logs—every batch records charge / drop weight, moisture, development time and cupping notes for our partners.
This week’s machine status
Main roaster
15kg per batch
Sample roaster
1kg per batch
Available this week
~240kg
Available next week
~360kg
Maintenance
Last Sunday monthly
Trial-roast slots
Tue / Thu 14:00–18:00
Trial roast & production flow
01
Sample & briefing
Send 200g+ green beans, brand positioning and target channel.
02
Trial roast & cupping
2–3 roast curves are produced and chosen via cupping.
03
Agreement
Lock spec, batch size, pricing and scheduling.
04
Production & QC
Each batch keeps a curve log and reference cup.
Processing fee (reference)
Final pricing depends on spec, batch size and packaging. Minimum 5kg per order.
Book a trial roast
We accept trial-roast collaborations from 5kg. Submit the form on our wholesale page or email service@ongucoffee.com.
Go to Wholesale