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Pour-Over Coffee Maker Problems? Fixes (2026)
Common pour-over problems: bitter coffee, sour coffee, stalled drawdown, sediment in the cup, and lukewarm brews.
Most pour-over trouble comes from grind size, pour technique, or a clogged filter, not from a faulty brewer. Work through these fixes in order before replacing anything.
Coffee tastes sour and thin
Sourness usually means under-extraction: water ran through too fast or the grind was too coarse. Grind a step finer, pour more slowly in smaller spirals, and check the water is properly hot before it hits the bed. A cold dripper also steals heat, so rinse ceramic or glass brewers with hot water first, and taste again before changing anything else.
Coffee tastes bitter and harsh
Bitterness usually means over-extraction: the grind was too fine, the pour stalled, or the bed sat in water too long. Grind a step coarser, keep the slurry level from rising too high, and avoid agitating the bed aggressively at the end of the pour. If the drawdown stalls completely, the filter may be clogged with fines, so try a coarser grind and a gentler pour.
The drawdown stalls or drains too slowly
Check grind size first, since a grind that is too fine is the usual cause of a stalled bed. Rinse the filter thoroughly before brewing, pour in stages rather than flooding the bed at once, and avoid stirring the slurry, which drives fines into the filter and seals it. On mesh-filter brewers, a clogged mesh needs a brush and a rinse, since dried grounds block the holes.
Sediment or grit in the cup
Some sediment is normal with mesh filters, and pouring gently while leaving the last sip behind keeps most of it out of the cup. With paper filters, sediment usually means a torn filter, a poor seal at the rim, or grounds splashed over the filter edge during the pour. Seat the filter fully, wet it before adding grounds, and keep the pour inside the bed rather than washing grounds up the filter wall.
Questions, answered
Why does my pour-over taste different every day?
Small changes in grind, dose, water temperature, or pour speed shift the extraction noticeably, and pour-over reveals those shifts more than a machine does. Weighing the dose and timing the brew removes most of the variation, and a consistent routine matters more than expensive gear.
Should I rinse the paper filter first?
Yes. Rinsing removes papery taste, preheats the brewer, and seats the filter against the wall, which prevents channelling. Discard the rinse water before adding coffee, or the first cup will taste diluted.
How do I keep the second cup hot?
Brew into a preheated, insulated carafe, or use a double-wall carafe like the Fellow Stagg's, which holds heat far longer than single-wall glass. Avoid leaving brewed coffee sitting on the spent bed, which keeps extracting and turns bitter.