RoastApr 12, 2026Windows

Yunnanimous 4/12

Yunnanimous·China·Natural

Duration11:12

Drop Temp

412°FMedium

First Crack378°F

Batch

500g→425g

15.0% yield loss

This China Natural was taken to a medium roast — 11:12 total, first crack at 378°F, 83% of total (late FC).

Development at 16.7% of total (well-developed) — balanced acidity and body.

Aggressive RoR of 18.1°/min at first crack, with 53% Maillard (balanced Maillard).

Roast Curve

11:12 total

Roast curve data, China Natural. 64 data points, sampled every 11 seconds.
Time (mm:ss)	Bean temperature (°F)	Rate of rise (°F/min)
0:06	342	-33.2
0:17	268	-50.0
0:27	235	-50.0
0:38	218	-50.0
0:48	213	-50.0
0:58	213	-34.2
1:07	215	-5.8
1:17	218	9.6
1:29	224	21.7
1:41	229	26.5
1:51	234	27.2
2:02	238	25.7
2:13	243	25.6
2:26	248	25.7
2:38	253	24.4
2:47	256	24.0
2:56	260	23.5
3:07	264	21.8
3:16	267	21.5
3:27	271	21.0
3:38	275	20.7
3:49	278	20.7
4:02	282	18.0
4:14	285	18.0
4:24	289	18.9
4:34	292	19.3
4:46	295	18.6
4:58	299	18.4
5:08	302	17.6
5:17	304	16.9
5:27	308	17.3
5:38	311	18.2
5:48	314	18.9
5:60	318	19.8
6:11	321	19.1
6:21	324	18.1
6:30	327	17.5
6:40	331	18.7
6:51	334	20.3
7:03	337	18.3
7:14	340	16.9
7:24	343	17.5
7:34	347	18.4
7:47	350	17.8
7:59	354	17.9
8:10	357	17.6
8:19	359	16.3
8:30	363	17.0
8:41	366	18.1
8:50	370	20.2
9:00	372	20.3
9:09	375	17.7
9:21	379	18.2
9:33	383	19.6
9:42	386	20.1
9:53	389	19.6
10:04	392	17.3
10:15	395	15.7
10:25	398	15.1
10:36	400	15.9
10:45	403	16.2
10:55	406	16.7
11:06	409	16.9
11:11	412	17.8

Recipe StepsSuggested

25 steps

Drying0:51· 8%

heat 55% → 50%, fan held at 10%, drum held at 40%

Charge @ 409°

Heat 55%Fan 10%Drum 40%

0:11

Heat 45%

Heat 50%

Maillard8:29· 76%

heat 55% → 70%, fan 15% → 85%

1–4

Heat 55%→70%

4 steps

2:0155%·3:0060%·4:0165%·5:0270%

5–19

Fan 15%→85%

15 steps

5:0715%·5:3420%·5:5925%·6:0830%·6:3935%·6:4640%·7:0445%·7:2750%·7:4255%·7:5560%·8:2865%·8:3470%·8:4475%·8:4980%·8:5485%

Development1:52· 17%

fan 90% → 95%

first crack start @ 378°

Fan 90%

9:49

Fan 95%

DROP 11 @ 12

End roast

Roast Analysis

DTRwell-developed

16.7%

balanced acidity and body

FC Timinglate FC

83.3%

momentum declining; watch for stall

RoR at FCaggressive

18.1°

high heat at FC; scorch risk

Phase Balance

23%Dry53%Maillard17%Dev

FC at 9:20Total 11:12

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