Brew Time
4–5 min
Grind
Medium-coarse
Ratio
1:15 – 1:17
Water Temp
200–205°F
What Makes the Chemex Different
The Chemex was designed in 1941 by chemist Peter Schlumbohm — a piece of lab equipment repurposed as a coffee brewer. It uses proprietary paper filters that are 20–30% thicker than standard V60 filters, removing virtually all oils, fine particles, and sediment.
The result is the clearest, cleanest cup in pour over brewing — a tea-like clarity that lets delicate floral and citrus notes from light roast shine without any interference. The Chemex is ideal for sharing: 6-cup and 8-cup models brew 30–40oz of coffee at once, all held in the elegant glass carafe.
Chemex vs V60
| Feature | Chemex | V60 |
|---|---|---|
| Filter thickness | 20–30% thicker proprietary | Standard paper |
| Body | Very light, tea-like | Light, clean |
| Oil in cup | Almost none | Minimal |
| Clarity | Exceptional | Excellent |
| Brew volume | Multiple cups (4–8 cup models) | Single cup typical |
| Brew time | 4–5 minutes | 3–4 minutes |
| Grind size | Medium-coarse (slightly coarser than V60) | Medium |
| Best for | Delicate light roats, sharing, clarity | Single cup precision, origin exploration |
Step-by-Step Recipe (6-Cup Chemex)
Fold and rinse the filter
Chemex filters are pre-folded squares. Open one corner to create a cone with three layers on one side. Place with the three-layer side facing the spout (this keeps the spout from being blocked during pouring). Rinse thoroughly with hot water — the Chemex filter has more paper flavor than standard filters, making rinsing particularly important. Discard the rinse water through the spout.
Add coffee
For a 6-cup Chemex: 42–45g of medium-coarse coffee. The grind should be slightly coarser than your V60 setting — think coarse sand rather than table salt. The thicker Chemex filter slows the flow rate, so you need a coarser grind to prevent over-extraction and a slow, stalling draw-down.
Bloom (45 seconds)
Pour 80–90g of water (twice the coffee weight) in slow circles over all the grounds. The Chemex bloom is slightly longer than V60 — 45 seconds is ideal because the thicker filter holds CO₂ longer. You'll see a dramatic bubble and rise from the grounds if your beans are fresh.
Continue pouring in stages
After the bloom, pour in 3–4 stages, adding 100–150g of water each time. Pour in slow, concentric circles from inside out. Maintain a consistent water level — keep the grounds submerged but don't overflow the filter. Total water: 700g for a full 6-cup Chemex.
Draw-down and serve
Total brew time should be 4–5 minutes. If it's going faster, grind coarser. If it's stalling past 6 minutes, grind coarser (counter-intuitive — the filter is probably clogged by too-fine grounds). Remove the filter when the draw-down is complete, swirl gently, and serve. The Chemex keeps coffee hot for 20–30 minutes without a heat source.
Best Coffee for Chemex
Light roast single origins are where the Chemex excels. Ethiopian washed coffees (Yirgacheffe, Guji) produce remarkable floral, jasmine, and bergamot notes. Kenyan AA brings juicy citrus and blackcurrant. The Chemex's extreme clarity lets these delicate flavors shine unfiltered. Dark roast works but loses most of the complexity that makes dark roast interesting — the bitterness comes through without the body the French press would provide.
Related Guides
Light Roast for Chemex
Ethiopian and Kenyan light roasts are the natural match for Chemex brewing — delicate, floral, and stunning in clarity.
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