Chemex

Grumpy Mule

The Brewmaster

An iconic piece of coffee equipment. Different size brewers are available, but we love the 6 cup design which is best suited to brews of between 400ml and 1litre.

Written by Elizabeth Blackwell

Written by Elizabeth Blackwell

Barista Trainer for the Midlands

Grumpy Mule

You Need

  • Freshly Grumpy Mule coffee: coarse texture (like granulated sugar). 4 heaped dessert spoonfuls (30g)
  • 6-cup Chemex
  • Chemex filter paper
  • Freshly boiled hot water (92-96C), just off boil.
  • Scale
  • Timer
  • Spoon
  • Mug

Guide

This uses 30g coffee, to 500ml water and will give you roughly a 440 ml coffee.

  1. Place filter paper into the Chemex, with the side with extra folds against the spout.
  2. Pour some hot water onto the paper to wet the full paper. This warms the Chemex and washes off any papery flavour in the filter. Pour this water away.
  3. Put your pre-weighed coffee into the paper, shake gently to level the grinds.
  4. Place the Chemex on the scale and zero the scales.
  5. Start your timer and pour 60g of water onto the coffee. Give it a stir to make sure that all the coffee is wet. Fresh coffee will bubble, releasing gasses (called ‘blooming’).
  6. Just watch the bubbles for about 20 seconds.
  7. After 20 seconds, pour the remaining water in 4,100ml slots with a 40ml top up at the end. Stir again after the first pour.
  8. The water should finish flowing in around 4 minutes and an additional minute of dripping. if yours is slow, try using a coarser grind, if it was too quick you need finer grind.