Light roast without the sharp edge

[Paperback-Postpunk]

Brewer and filter: Hario V60 02 plastic; Hario tabbed 02 paper
Grinder, burr and calibration: 1Zpresso ZP6 Special; 48 mm heptagonal burr; 5.2 from calibrated zero
Bean, roaster, process and roast date: Kenya Nyeri AA; Square Mile; washed; roast date 2026-08-14
Dose and water mass: 15.0 g coffee; 250 g water
Temperature and water profile: 93°C; remineralized RO, about 60 ppm GH / 25 ppm KH
Pour/agitation schedule: 60 g bloom for 45 s, then pulse pours roughly every 30 s to 250 g
Drawdown time: 3:20
Expected and perceived flavour: expected cocoa and red fruit; perceived cup is thin despite adequate extraction time
Changes already tested: changed grind one step coarser; kept everything else fixed

The annoying part is that the cup is not terrible, just clearly wrong in a repeatable way. I want one next experiment rather than a shopping list of fixes. If you have run Hario V60 02 plastic with something similar, I am especially interested.

[Paperback-Postpunk]

I tested one change from the opening post and it moved the cup, but did not finish the job. Next variable: grind one small step coarser. Why: this coffee may still be releasing enough gas to disturb the early extraction. Expected result: more even early flow and a sweeter cup as it cools. I will report the actual result rather than stack another change on top.

[Crowd Wok]

i’ve used Kenya Nyeri AA on the same Hario V60 02 plastic / 1Zpresso ZP6 Special combination. Change: reduce the final pour by 20 g. Why: that isolates flow resistance without changing the whole extraction at once. Expected result: less sharpness while keeping roughly the same sweetness. Keep everything else exactly where it is for one brew.

[Wok-Dough]

Controlled-test suggestion: lower water temperature by 2°C. Why: the present agitation can be creating fines migration and choking the bed. Expected result: less bitterness in the last third of the cup. Do two brews if you have enough coffee, one current recipe and one changed variable, and taste them side by side as they cool.

[Roomtone]

Same Hario V60 02 plastic and grinder here, different but similarly light coffee. Change: lower water temperature by 2°C. Why: it changes concentration while leaving the rest of the recipe readable. Expected result: a flatter bed and less drying finish. That should tell you whether the behaviour belongs to the setup rather than this exact bag.

[Databard]

One variable only: change only the filter paper. Why: it changes concentration while leaving the rest of the recipe readable. Expected result: slightly more body without making the cup muddier. I would not buy anything until that test gives you a direction.

[Crowd Wok]

One variable only: reduce the final pour by 20 g. Why: this coffee may still be releasing enough gas to disturb the early extraction. Expected result: a clear change in flow speed if the paper is part of the problem. i’d not buy anything until that test gives you a direction

[Author]

Posts