Pour-Over Draining Too Fast? Causes and Fixes

The fix: Grind 2–3 steps finer (the cause ~80% of the time), confirm a 1:16 dose, pour in low slow stages over the coffee — never down the filter walls.

A 250 ml pour-over should take roughly 2:30–3:30 from first pour to last drip. If yours finishes in 1:45, the water didn't spend enough time with the coffee, and the cup will taste sour, thin, and weak. Fast drawdown is the easier of the two drawdown problems to fix — here's the diagnosis, ranked by likelihood.

#1. Grind too coarse (the cause ~80% of the time)

Coarse grounds leave big gaps for water to flow through and offer little surface area to extract from — the brew is doubly handicapped. The fix is simple: 2–3 steps finer, brew again, check the time. Repeat until drawdown lands in the window and the cup tastes sweet rather than sharp.

Two situations make this more likely than usual:

• A new bag of dark roast. Brittle dark-roasted beans grind coarser at the same setting than the light roast you had before.
• A grinder whose setting drifted. Hand grinders especially — check that the adjustment ring hasn't rotated.

#2. Dose too low

A 12g bed in a dripper sized for 15–25g is shallow, and shallow beds drain fast no matter the grind. Check that your ratio is right (1:15–1:17 — for 250g of water that's about 15g of coffee) and that you actually weighed the dose rather than scooped it. If you want a smaller cup, expect to grind finer to compensate for the shallower bed.

#3. Pouring everything at once

The higher the water column sitting on the coffee, the faster it pushes through. If you dump all 250g in one fast pour, you create maximum head pressure and minimum contact time. Pour in stages — bloom, then two or three pours of 80–100g each — keeping the water level moderate. Slower, lower pours alone can add 30–45 seconds of contact time at the same grind.

#4. Pouring down the filter walls

Water poured onto the exposed filter paper above the coffee bed bypasses the coffee entirely and runs straight to the cup — fast drawdown and dilution in one mistake. Keep your pour circles over the coffee, stopping a centimeter short of the edge.

#5. Filter and dripper details

• Filter not rinsed/seated: a dry filter that hasn't been pressed into the cone can leave gaps along the wall that act as drainage channels. Always rinse with hot water first.
• Wrong filter for the dripper: fast filters (e.g., the crisp "fast" paper varieties) in an already fast cone compound the problem; a standard paper slows things down.

#The checklist

Fix in that order — grind first — changing one thing per brew. And remember the time window is a proxy, not the prize: a brew at 2:20 that tastes sweet and balanced needs no fixing. If the time is right but the cup is still sour, go finer anyway; if it's in the window but bitter, go coarser. Taste outranks the stopwatch.