The Chemex


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In this blog you will learn the basic technique to dial in a great tasting Chemex that you can share… or not. A Chemex brewer is an all-in-one brewer (brewer & serving vessel) that allows you to make several amazing cups of coffee with minimal investment.

Things to note – a Chemex is great for several servings at a time; low-ish maintenance; do not reuse filters. Link to the brewer and it’s respective filters below. Links to everything else in the “Intro to Home Brew” blog.


  • 35 grams of course ground coffee
  • 500 grams of almost boiling water

This recipe uses a 1:15 coffee to water ratio.


  • A Chemex
  • Chemex specific filters
  • Great water (read our intro to home brew blog)
  • Great coffee (again, read that intro!)
  • Gooseneck kettle (please, the intro blog)
  • Scale
  • Timer
  • Mug
  • Optional: stir spoon

How to brew:

  1. Heat a kettle full of water to 210°F or 99°C.
  2. Weight out and grind 35g of beans – course grind.
  3. Open up the filter so three flaps are on one side and one on the other.
  4. Place filter in the Chemex and rinse thoroughly with hot water – this will heat your vessel, remove paper taste from the filter, and seat the filter firmly in the brewer.
  5. Dump out your rinse water – seriously don’t forget this!
  6. Pour coffee grinds into the middle of the wet filter and give it a few taps to even out the surface but be gentle.
  7. Place entire setup onto scale and tare it (zero it out).
  8. Begin timer – we’re shooting for roughly 4.5 minutes brew time, meaning we want our brew to finish as close to the 4.5 minute mark as possible.
  9. The bloom stage – this is the de-gassing phase – start your pour by wetting all of the grinds with roughly 50g of water – give it a gentle swirl and let the coffee bubble up for roughly 30 seconds.
  10. The meat of the brew – pour in concentric circles or whatever method allows you to continually and evenly soak all of the coffee – bring weight up to 350g roughly.
  11. Let coffee brew for a second or two and observe your timing (this will allow you to make potential fine-tuned adjustments to the grind size for later brews).
  12. Pour one ring around the edge of the filter breaking off the grinds clinging to the side of the filter – don’t spend too much time pouring directly onto the filter though.
  13. Finish the pour off at roughly 500g.
  14. Now either gently stir with a spoon or swirl the brew to even out the coffee bed to allow the water to evenly extract through its finish – #flatbed.
  15. Pour brew into your favorite mugs and enjoy!
  16. Optional: Clean up after yourself

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