How to Roast Ethiopia Sidamo ETH04: NCT Filter E Recipe
Dialing in Ethiopia Sidamo ETH04 — 13 logged home roasts with real metrics
Ethiopia · Sidamo · Washed · 1,400-2,200 MASL · G2 · John Burton
aroma of caramel, lemon flower and spices. Flavours of madeira cake and black tea with lemongrass undertones. Long lemon black tea finish. Crispy acidity, medium coating body. Score: 82.5+
“nice and fruity, smooth, a little darker, could probably be roasted a tick lighter.”
Winning batch R-094 · 2026-07-14
Cup quality across 13 attempts
Each point is a roast scored from tasting notes (1 = miss, 5 = dialed in). The series stops at the teal halo — once dialed in, later repeats aren’t scored the same way.
Where the good cups live
Roast level vs batch size. Color = profile family; larger dots = better cups. Notice how quality clusters once batch size moves to 100–120g.
Roast mechanics that stuck
DTR, roast loss, and rate-of-rise across attempts with klog data. Each series is scaled on its own axis so shapes are comparable.
What the data taught us
- 1NordicLight ~2.8 / 120g (R-037) first hit “nice and fruity” after rest — early 9min/Raost runs were green or dark-flat.
- 2NCT Filter E around 2.2–2.5 / 100g became the cleaner modern lane (R-069, R-094): fruity, no green, watch for a touch dark.
- 3F-WSH 1500-2200 at 2.3 was awful underdeveloped on this lot — same family that works for Gatugi is not automatic here.
- 4Current fine-tune: Filter E at 2.0 (R-101) after “tick lighter” feedback on R-094.
Want to log a journey like this?
Track profiles, klog metrics, and tasting notes until the cup clicks.