One bag, four waters, very different coffee

[Ringside And Rescue]

Brewer and filter: AeroPress Original; AeroPress paper
Grinder, burr and calibration: Baratza Encore ESP; M2 conical burr; setting 24; internal calibration middle
Bean, roaster, process and roast date: Colombia Pink Bourbon; Kawa; anaerobic washed; roast date 2026-08-15
Dose and water mass: 16.0 g coffee; 256 g water
Temperature and water profile: 91°C; bottled low-mineral water, about 45 ppm TDS
Pour/agitation schedule: 60 g bloom for 45 s, then pulse pours roughly every 30 s to 256 g
Drawdown time: 3:45
Expected and perceived flavour: expected clean citrus and tea-like finish; perceived cup is bitter in the finish
Changes already tested: changed filter paper and repeated the same recipe

I have enough contradictory impressions in my notes that I finally stopped guessing and ran the same coffee side by side. This is not laboratory science, but at least the variables are written down.

[Ringside And Rescue]

I support this experiment mainly because it does not require buying another shiny cylinder.

[Object Biography]

This is exactly the kind of note I want in a forum: date, setup, what changed, and what happened. Future searchers can do something with it.

[Lentil-Seamstress]

I would keep the current recipe for another two brews before changing anything. One good cup can be luck; three similar cups is information. Hope that helps.

[Raga-Docent]

I am less convinced by the flavour claim than the workflow claim, but that may be because my water is different.

[Ringside And Rescue]

That tracks with my experience. The useful part is that you wrote down what stayed fixed, so somebody else can actually test it.

[Object Biography]

That tracks with my experience. The useful part is that you wrote down what stayed fixed, so somebody else can actually test it.

[Author]

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