Variations in profile with same MET
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- Posts: 17
- Joined: 9 years ago
today I used my quest to roast a few batches of a kenyan that I just received from sweet maria's. I did three roasts back to back. the first was very close to what I was shooting for except that the ramp was a bit quick. I lowered my MET a bit during ramp and pretty much hit my target profile for roast 2. on roast 3, I tried to replicate my second roast with just a slightly quicker ramp. same airflow, same charge temp, same MET throughout the roast (except for being just a few degrees hotter during ramp). but for some reason, roast 3 had a far quicker drying time and an even slower ramp than roast 2. anybody able to help with this? pretty frustrated because it seems like I have almost no control over my profiles when things like this happen, which is semi-frequently.
roast 2:
roast 3:
roast 2:
roast 3:
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- Posts: 251
- Joined: 9 years ago
Weird.
Did you charge the same bean mass? Did you adjust the airflow during the second roast and didn't set it back in the third roast?
How does the roast 3 taste? Eccentric acidity after cooling down?
Did you charge the same bean mass? Did you adjust the airflow during the second roast and didn't set it back in the third roast?
How does the roast 3 taste? Eccentric acidity after cooling down?
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- Posts: 11
- Joined: 13 years ago
Turning point temp. was higher in roast 3. So I suppose the roaster was not as good heated up in roast 2.
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- Posts: 17
- Joined: 9 years ago
same bean mass, yes. I'm letting the beans rest right now. it could feasibly be a great roast, really I'm just annoyed at the uncertainty of planning my profiles. doktor, that's a great point. maybe I just need to holding at 400 longer to allow the drum to cool back down between roasts.