Lot 12 — Natural Aerobic Fermented · Sunrise Orange · 320kg split into Raised Bed, Ground Patio and Dry Room
Lot 12 was designed as a comparative experiment: after aerobic fermentation with Sunrise Orange yeast for 4 days (pH 5.3 → 4.3), we depulped and split the coffee into 3 equal parts, each drying in a different environment. The goal: document how the drying method impacts moisture, Aw, density and bean temperature over time.
Drop from 5.3 → 4.3 in 4 days submerged
Dry Room dries 3x faster than outdoor beds. Ground patio retains moisture longer.
Dry Room reached safe Aw (<0.65) in 6 days. Outdoor beds oscillated for over 13 days.
All started with high density (~720 g/L). Dry Room lost density faster.
Dry Room maintained stable temperature (~20°C). Ground patio reached 34°C.
Dry Room dried coffee in 9 days vs 14-16+ days on outdoor beds — almost 2x faster.
Bean temperature in Dry Room stayed stable between 19-22°C, while ground patio reached 34°C — risk of cell damage.
Aw in Dry Room reached 0.523 (safe zone) in 6 days. Outdoor beds oscillated between 0.7-1.0 for over 10 days.
Density dropped faster in Dry Room (722 → 340 g/L), possibly due to more uniform drying.
Ground patio retained moisture longer and showed dangerous temperatures — higher microbiological risk.
Next step: comparative cupping of all 3 samples to evaluate sensory impact of each method.
Status: Resting
Final weight: 24.200kg. Awaiting stabilization for new Aw measurement and comparative cupping.
Follow the results
When the comparative cupping is done, we'll publish the sensory results here. Want to be notified?
Notify me| Date / stage | pH (pH) |
|---|---|
| 27/05 | 5.3 |
| 28/05 | 4.8 |
| 29/05 | 4.4 |
| 30/05 | 4.3 |
| 31/05 | 4.3 |
| Date / stage | Raised Bed (%) | Ground Patio (%) | Dry Room (%) |
|---|---|---|---|
| 31/05 | 193.8 | 233.2 | 179.6 |
| 01/06 AM | 104.3 | 133.3 | 74.8 |
| 01/06 PM | 87 | 114 | 61.5 |
| 02/06 | 88.4 | 136.4 | 45.8 |
| 03/06 | 100 | 137.9 | 36.7 |
| 04/06 | 81 | 91 | 27.1 |
| 06/06 | 44 | 86.7 | 16.9 |
| 07/06 | 43.5 | 56.6 | 23.5 |
| 08/06 | 34 | 35.8 | 16 |
| 11/06 | 30.1 | 21 | — |
| 12/06 | 29.2 | 17.3 | — |
| 13/06 | 24.3 | 14.1 | — |
| Date / stage | Raised Bed (aW) | Ground Patio (aW) | Dry Room (aW) |
|---|---|---|---|
| 31/05 | 1 | 1 | 1 |
| 01/06 AM | 0.888 | 1 | 0.999 |
| 01/06 PM | 0.946 | 0.909 | 0.896 |
| 02/06 | 0.928 | 0.913 | 0.809 |
| 03/06 | 0.931 | 0.94 | 0.816 |
| 04/06 | 1 | 1 | 0.846 |
| 06/06 | 0.874 | 1 | 0.523 |
| 07/06 | 0.751 | 0.735 | 0.747 |
| 08/06 | 0.798 | 0.856 | 0.705 |
| 11/06 | 0.798 | 0.759 | — |
| 12/06 | 0.898 | 0.813 | — |
| 13/06 | 0.712 | 0.642 | — |
| Date / stage | Raised Bed (g/L) | Ground Patio (g/L) | Dry Room (g/L) |
|---|---|---|---|
| 31/05 | 717.1 | 724.1 | 722.5 |
| 01/06 AM | 582.3 | 715.5 | 493.6 |
| 01/06 PM | 541.4 | 540.9 | 529.6 |
| 02/06 | 565.6 | 558.6 | 536.6 |
| 03/06 | 635 | 649.4 | 469.5 |
| 04/06 | 614 | 641.3 | 507.1 |
| 06/06 | 516.2 | 582.8 | 398.6 |
| 07/06 | 533.4 | 571.5 | 340.5 |
| 08/06 | 497.4 | 559.2 | 340 |
| 11/06 | 428.1 | 388.9 | — |
| 13/06 | 369 | 366.6 | — |
| Date / stage | Raised Bed (°C) | Ground Patio (°C) | Dry Room (°C) |
|---|---|---|---|
| 01/06 AM | 30 | 33 | 20 |
| 01/06 PM | 24 | 27 | 20 |
| 02/06 | 17.9 | 17.2 | 21.2 |
| 03/06 | 17.6 | 19 | 22 |
| 04/06 | 18.3 | 20.3 | 22 |
| 07/06 | — | — | 19 |
| 08/06 | 25 | 34 | 20 |