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fermentation failed

F
dua minggu yang lalu
want to share some type of failure at Zfermentation coffee that I've met, because some of them are not directly obvious to the level of Zcupping or even at the hands of Zroaster.

fermentation is too long (over-fermented): It's easier to detect if it's severe because aroma is strong. Can pass visual. The ZZCC005Zs are still acceptable, but in the cup there are subtil off- nootes, sour far from bright acidity.

fermentation is uneven: In one tank, top and bottom can exist in different conditions. The top layer of air contact if the tank opens, the bottom layer is more anaerobic. The result is in one lot. There's an overseed and there's an under, in the cup, so inconstant batch per batch.

contamination from the water source of the wash: if the water used is not clean, it could be introduce the microbes. This could manifest as an off-flavor that's hard to trace because it's not constant, depending on which batches are the thieving of troubled sources.

The damage from the drying immediately after Zfermentation without draining the proper: Zparchment which goes into raised bed is still very wet and muddy, if not squashed correctly, there could be mold spots in uneven dry areas.

Does anyone have any other type of failire? that I list above it mostly of my own experience and the story of some farmer's ever discussed.
6 Replies
A
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the most common thing we experienced in the cauldron was that fermentation was uneven because the tank was less stirred. If the tank is big and the volume of cherry is small, the distribution of Zfermentation is not uniform. The solution we're using right now: stir at least 2x during the fermentation period, especially in the 12th and 24th hours. The results were more uniform at the smell check.
H
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underestimatory failures: unterminated washing after fermentation. That mucilage residual remains in parchment when entering Zraised bed is still microbiologically active. If the rest of the mucilage keeps fermenting over the raised bed, it could produce off-compound that goes into the seeds. That's what sometimes makes the phantom fermented notes in the cup even though the fermentation was stopped at the right time.
A
dua minggu yang lalu
that's a problem we've had, too. Now the couch is triple rinse with clean water flowing after fermentation before climbing to ZZZCF002Z. results in a cleaner cup. It takes more water but worth it to lot premium.
Y
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about the contaminants from the water source, There once was a processor that trace inception to a newly completed water installation and it turns out there was a little chlorine residual from a new pipe. Chlorine in low concentration is not directly off but could inhibit yeast and change fermentation dynamics. The water quality test was worth putting into SOP.
R
dua minggu yang lalu
simple tips that help make fermentation monitors uneven in large tanks: take samples from three different points, top of the bottom, at each check session. If the smell checks out, If there's any difference, the distribution sign is ununiform and needs to be steered. It doesn't need expensive tools, it needs discipline.
S
satu minggu yang lalu
it just found out there was a complex variable that could have failed fermentation. All this time knowing is that fermentation coffee just put it in the tank. Wait for it. Turns out there's a lot of points that could go wrong.

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