How to Brew on a Chemex with Ka’u Coffee

A step by step guide on how to brew Chemex coffee, featuring 100% Hawaiian coffee from the Ka'u district.

Chemex Brew Guide

What you'll need:

  • Kettle
  • Scale
  • Burr Grinder
  • Chemex
  • Coffee


  1. Place filter in Chemex.
  2. Ensure tripled sided portion is on same side as spout.
  3. Rinse filter with hot water.
  4. Discard water and preheat your mug.
  5. Measure 40g (about 6 tbsp.) of freshly roasted coffee.
  6. Grind coffee to a medium, about the size of sea salt.
  7. Place coffee in filter.
  8. Gently shake to level the coffee bed.
  9. Zero out scale and start timer.
  10. Pour 100g of hot water about 205°F, onto the coffee making sure to evenly saturate all of the coffee grounds.
  11. Let coffee bloom for 45 sec., the bloom releases the gases in the coffee.
  12. Pour another 150g of water every 45 sec., pouring in a circular pattern starting from the center and moving outward to the edges of the coffee bed to ensure all coffee grounds are saturated evenly.
  13. Continue pouring until you reach 600g, or about 20oz, of coffee. You should finish pouring all of the water in 3 min.
  14. The last pour will take about 1 minute to finish draining. Total brew time should be about 4 min.
  15. Remove filter and discard.
  16. Swirl coffee in the Chemex
  17. Pour coffee into your mug and enjoy!

Ka'u Morning Glory