Brewing and Troubleshooting - Chemex Coffee Maker

The Chemex has no moving parts so is durable and long lasting. Its hourglass shaped flask is made entirely of glass, a chemically inert material that does not absorb odors or chemical residues. By inserting a paper filter in the top of the Chemex you create a pour-over style coffee maker.

Using a brewing method that saturates the ground coffee to create a 'bloom' you are able to extract the subtle and complex flavours of your coffee.

Find below a complete guide on how to brew the ideal Chemex coffee; we have also included a coffee troubleshooting section to assist you in diagnosing the potential cause of an undesired result in the cup.

Checkout our Chemex range today and match it with one of Di Bella Coffee's signature coffee blends.

Chemex 'How to':

GRIND: Coarse
DOSE: 10g Coffee/130ml of water



  1. Prime the Chemex by rinsing with hot water.
  2. Unfold the filter paper into a cone and place in to the Chemex maker.
  3. Heat some water to just below boiling point.
  4. Scoop the coffee into the filter, pour in a small amount of water, just enough to soak the grounds - this will create a bloom.
  5. Let the wet coffee steep for around 60 seconds.
  6. Gradually add the rest of the water to the centre of the bloom (1 cup per serve), keeping the grounds covered at all times, be careful not to overfill the filter.
  7. Once the water has passed through the filter, discard the filter and grounds and serve the coffee.

KEY ELEMENTS: Bloom time = 30-60 seconds, water temperature 90-94°

TASTES : Bright, light-bodied
LOOKS: Reddish-brown, honey-like reflection

  • Grind ideal; (consistency of table salt)
  • 30-60 second bloom;
  • Recommended dose/cup;
  • Water 90-94°

Problem Scenario 1

TASTES: Bitter, gritty-bodied
LOOKS: Dark brown reflections

  • Grind too fine;
  • Longer than 60 second bloom;
  • More coffee than recommended dose/cup;
  • Water hotter than 94°

Problem Scenario 2

TASTES : Sour, thin-bodied
LOOKS: Diluted, brown reflections

  • Grind is too coarse;
  • Shorter than 30 second bloom;
  • Less coffee than recommended dose/cup;
  • Water colder than 90°