How to Roast Colombia ASOSPAC: NCT Filter B for Fruit + Chocolate
Data-backed case study for Colombia ASOSPAC COL03: profile experiments toward a fruity-bright goal with real klog metrics.
BrewedLate Coffee
Coffee Expert
The short answer: for washed Colombia ASOSPAC (Tolima, Fair Trade Organic), the best recent home recipe is NCT Filter B at level 2.4 / 100g — chocolate and fruit, ~12% DTR. 9minFilter ~1.8 first unlocked fruit; early Raost runs at high DTR were dark and dead for fruit.
Colombia · Tolima · Washed · 1550-2,030 MASL · Excelso EP · John Burton
Aroma of chocolate, molasses and spices. Flavours of dark chocolate, cranberry and raw sugar with a long caramelized almond aftertaste. Medium-high crisp acidity and medium coating body. Score: 83.75+
“nice and different. i've got a chocolaty note but also some fruit.”
Winning batch R-092 · 2026-07-09
Cup quality across 12 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
- 1Early Raost runs at high DTR tasted dark/roasty with no fruit — wrong family for a bright Colombian goal.
- 29minFilter around level 1.7–1.8 / ~110–120g first unlocked clear fruit (R-034).
- 3Latest sweet spot: NCT Filter B at 2.4 / 100g — chocolate plus fruit; a tick lighter (2.2) is the current fine-tune.
- 4Washed F-Series still sometimes brought green notes even when fruit showed — NCT B was cleaner for this lot.
Want to log a journey like this?
Track profiles, klog metrics, and tasting notes until the cup clicks.
About ASOSPAC
ASOSPAC is a smallholder association in Santiago Pérez, Tolima — high-altitude washed lots with dark chocolate, cranberry, raw sugar, caramelized almond, and crisp acidity (~83.75+). Roast goal here: fruity-bright, keep berry brightness with supportive caramel, not a heavy chocolate bomb.
Journey
Raost: wrong gear for fruit
Early Raost @ 2.2 / 100g hit ~33% DTR and tasted dark and roasted with no fruit. Lighter Raost still fought green then flattened into chocolate without the cranberry lift.
9minFilter: first real fruit
9minFilter ~1.8 / 110g finally produced “fruit with acidity” and a second brew that was sweet and fruity. That unlocked the goal — even if later rest comparisons to commercial coffee stayed demanding.
NCT Filter B: chocolate + fruit
Filter B @ 2.4 / 100g was “nice and different… chocolaty note but also some fruit,” with a note that bloom looked a little dark (hence a 2.2 follow-up). Washed F-Series still occasionally reintroduced green notes even when fruit appeared.
Dialed-in recipe
| Setting | Value |
|---|---|
| Profile | NCT Filter B |
| Level | 2.4 (fine-tune 2.2) |
| Batch | 100g |
| DTR | ~12.2% |
| Loss | ~16% |
| Rest | 7–10 days |
Charts and full log: ASOSPAC case study →
Related reading
- How to roast Kenya Gatugi peaberry
- How to roast Ethiopia Yirgacheffe
- Kaffelogic Nano 7 profiles
- Colombian coffee value guide
- Data page: /roast-logs/colombia-asospac-col03
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How to roast Colombia ASOSPAC on a Kaffelogic Nano
Dialed-in recipe from a 12-roast log for washed Tolima ASOSPAC
Load 100g green
NCT reference batch size for Filter B.
Select NCT Filter B at level 2.4
Brightness/fruit-oriented pack; drop toward 2.2 if bloom looks dark.
Target ~12% DTR and ~16% loss corridor
Match the winning batch when conditions allow.
Rest at least 7–10 days
Re-brew after rest before changing family.
Taste for cranberry fruit plus cocoa/chocolate
Fruit and chocolate together — not pure roast or pure green.
Frequently Asked Questions
What is the best Kaffelogic profile for Colombia ASOSPAC?
Why did Raost taste dark and roasty on this Colombian?
Did 9minFilter work for ASOSPAC?
What batch size should I use?
How long should washed Colombia rest?
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