pot of Chemex on the table makes enough for two or three people, and the cup it pours is bright and clean with almost no sediment. That clarity is the reason most people reach for this brewer.
The whole character comes from the filter. It is a thick bonded paper that traps oils and fine particles, so the cup ends up light-bodied and crisp. The same thickness slows the flow, which shapes how you grind and how you pour.
This guide walks you through one Chemex brew end to end: rinsing the filter, the ratio, a short bloom, then steady staged pours and a clean draw-down. If you already know the basics of extraction, you can follow it with a scale, a kettle, and a grinder.
What you need before you start
A Chemex carafe, the matching bonded paper filters, a kettle, a scale, and a timer. A gooseneck kettle helps you keep the pour slow and controlled, though it is not strictly required. Grind your coffee fresh if you can.
Target ratio: 1 part coffee to 15 or 16 parts water by weight. A practical batch is 30 g of coffee to roughly 480 to 500 g of water, which fills a few cups. Water temperature should sit between 93 and 96 degrees Celsius. Start near 94 degrees and adjust from the taste.
Grind size: medium-coarse. Because the Chemex filter is thick and drains slowly, grind a touch coarser than you would for a V60. If you grind as fine as a V60, the thick filter can stall and the brew drags on. A medium-coarse bed keeps the flow moving.
Why the filter shapes the cup
The Chemex filter is noticeably thicker than a standard pour-over paper. It holds back coffee oils and the finest particles, so the brew that lands in the carafe is clear and free of sediment. The result is a clean, bright, light-bodied cup with sharp, well-defined flavors.
That clarity is a deliberate trade. An immersion brew such as a French press leaves the oils and some fines in the cup, which gives a heavier, rounder body and a softer texture. The Chemex goes the other way. If you want every flavor note to read clearly and the mouthfeel to stay light, the thick filter is doing exactly its job.
The pour sequence
Open the filter into a cone and set the triple-fold side toward the spout. Rinse it well with hot water. Discard the rinse water from the carafe before you go on.
Add your ground coffee and tap the carafe gently to level the bed. Start your timer with the first pour.
Bloom pour: add about twice the coffee weight in water. For 30 g of coffee, that is roughly 60 g. Wet the whole bed evenly and wait 30 to 45 seconds while the grounds release their gas and settle.
Staged pours: bring the water up in slow, controlled stages, pouring in gentle circles from the center outward. Keep the water level steady and the bed flat. Let the level drop a little between stages rather than overfilling the cone. Continue until you reach your full target weight.
Draw-down: once all the water is in, leave the bed alone and let it draw down on its own. For a larger batch the whole brew runs about 4 to 5 minutes from the first pour. Lift the filter out. Give the carafe a gentle swirl before you serve.
- Rinse the filterSet the filter in the carafe with the triple-fold side toward the spout. Rinse thoroughly with hot water, then discard the rinse water.94 °C
- Add and level the groundsAdd 30 g of medium-coarse coffee and tap the carafe to level the bed.
- BloomAdd about 60 g of water, wet the whole bed, and wait while the grounds settle.00:4060 g94 °C
- First staged pourPour in slow circles up to about 250 g, keeping the level steady and the bed flat.250 g94 °C
- Second staged pourContinue in stages to the full 480 g, letting the level drop a little between pours.480 g94 °C
- Draw down and serveLeave the bed alone and let it draw down. Lift out the filter and swirl the carafe before you serve.01:30
Reading the result and adjusting
Taste before you change anything. Weak and sour usually means the grind is too coarse or the water was too cool: grind a little finer or raise the temperature, one change at a time. Bitter and drying points the other way, toward a grind that is too fine or water that is too hot.
If the brew stalls or drags well past 5 minutes, your grind is most likely too fine for the thick filter. Go coarser on the next brew. If a faint papery note shows up in the cup, the filter was not rinsed enough, so rinse it longer next time.
The total time is a useful signal. Taste tells you more, so let the cup guide your next adjustment.
Common questions
- Why is my Chemex brew so slow?
- Almost always the grind is too fine for the thick bonded filter. The Chemex paper drains slowly by design, so a grind that works in a V60 can stall it. Go a step coarser to a medium-coarse setting. A pour that overfills the cone can also slow things down, so pour in steady stages and let the level drop a little between them.
- What grind should I use for Chemex?
- Medium-coarse, a touch coarser than you would use for a V60. The thick filter slows the flow, so a coarser bed keeps the water moving and avoids a stall. If the brew runs much past 5 minutes, go coarser still. If it tastes weak and sour and drains very fast, go a little finer.
- Why do I need to rinse the Chemex filter?
- The Chemex filter is thick, and unrinsed it can leave a clear papery taste in the cup. Rinsing it thoroughly with hot water washes that away, and it preheats the carafe at the same time. Pour the rinse water out before you add the coffee, and set the triple-fold side of the filter toward the spout.