RoastMay 17, 2026web_live

Yunnanimous · 2026-05-17

Yunnanimous·China·Natural

Duration13:02

Drop Temp

410°FMedium

First Crack383°F

Batch

501g→431g

14.0% yield loss

This China Natural was taken to a medium roast — 13:02 total, first crack at 383°F, 84% of total (late FC).

Development at 16.5% of total (well-developed) — balanced acidity and body.

RoR of 14.0°/min at first crack kept momentum smooth into development, with 57% Maillard (extended Maillard).

Roast Curve

13:02 total

Roast curve data, China Natural. 66 data points, sampled every 12 seconds.
Time (mm:ss)	Bean temperature (°F)	Rate of rise (°F/min)
0:06	349	-41.7
0:19	266	-50.0
0:31	231	-50.0
0:44	217	-50.0
0:56	214	-42.8
1:09	217	-6.6
1:21	222	15.8
1:33	227	23.5
1:46	233	26.4
1:58	238	27.6
2:11	244	25.8
2:23	249	25.5
2:35	253	23.7
2:48	257	21.2
3:00	262	20.4
3:13	266	21.4
3:25	270	21.6
3:38	274	19.6
3:50	278	18.2
4:03	282	19.1
4:15	285	18.4
4:27	289	16.5
4:40	293	17.0
4:52	296	17.0
5:05	300	17.6
5:17	303	17.0
5:30	306	15.7
5:42	310	15.8
5:54	313	15.7
6:07	316	15.7
6:19	319	15.7
6:31	322	15.2
6:44	325	15.2
6:56	328	14.9
7:09	331	14.5
7:21	335	15.1
7:33	337	14.5
7:46	340	12.9
7:58	343	13.7
8:10	345	13.3
8:23	349	13.7
8:35	351	13.8
8:48	354	12.7
9:00	356	12.9
9:13	359	12.8
9:25	362	14.0
9:38	366	15.0
9:50	368	15.4
10:02	371	13.0
10:15	374	12.7
10:27	377	13.8
10:39	380	14.7
10:52	382	13.9
11:04	386	14.1
11:16	388	14.3
11:29	390	11.6
11:41	393	11.1
11:54	395	12.8
12:06	398	12.1
12:18	401	12.7
12:30	403	13.6
12:42	405	10.8
12:55	408	10.9
13:07	404	5.8
13:16	388	-29.4
13:18	385	-42.1

Recipe StepsSuggested

34 steps

Drying0:52· 7%

heat 45% → 50%, fan held at 10%, drum held at 40%

Charge

Heat 45%Fan 10%Drum 40%

Heat 50%

Maillard10:01· 77%

heat 55% → 60%, fan 15% → 95%

2:29

Heat 55%

dry end

Heat 60%

3–19

Fan 15%→95%

17 steps

5:1315%·5:5620%·7:0825%·7:2130%·7:2635%·7:4540%·7:5945%·8:4350%·8:5455%·9:1860%·9:2465%·9:2970%·9:3475%·9:4180%·9:5385%·10:2090%·10:4195%

Development2:09· 16%

heat 55% → 0%, fan 90% → 0%, drum held at 0%

11:11

Heat 55%

11:26

Heat 60%

3–11

Fan 90%→95%

9 steps

11:3290%·11:3775%·11:4265%·11:4775%·11:5295%·12:0990%·12:1995%·12:2490%·12:2995%

13:16

Heat 0%Fan 0%Drum 0%

DROP 13 @ 02

End roast

Roast Analysis

DTRwell-developed

16.5%

balanced acidity and body

FC Timinglate FC

83.5%

momentum declining; watch for stall

RoR at FCsmooth

14.0°

healthy momentum into development

Phase Balance

20%Dry57%Maillard16%Dev

FC at 10:53Total 13:02

Community benchmarks

1 China Natural roast

Community data building — 1 published China Natural roast so far.

Benchmarks appear once the sample reaches 10.

See all China Natural roasts