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Chemex coffee brewing guide

Chemex coffee brewing guide

Coffee brewing method: Filter coffee
Skill level: Medium

The Chemex. An elegant, timeless brew method, perfect for the entertainer. This is the ideal piece of coffee brewing kit if you are regularly making coffee for friends and family, but want a method to show off your speciality coffee expertise.


A clean cup of coffee

With a super-thick filter, the Chemex filter coffee maker stands out as it provides arguably the cleanest cup of coffee for at-home brewing. If you are a frequent user of a cafetière, this piece of kit might change your entire coffee drinking experience.

Kit list:

  • Chemex
  • Chemex filter papers
  • A coffee grinder
  • Scales
  • Timer
  • Your fave mug to drink out of
  • 30g epic coffee (we love brewing a single origin coffee in a Chemex)
  • Coffee grinder
  • 500ml water

Chemex Coffee Brewing Method

1. Weigh and grind

The weight and grind of your coffee is key to a consistently tasty brew with replaceable results. If you're brewing for two people, we recommend starting with 30g of coffee, and 500ml water. Aim for a medium-coarse grind.

You may enjoy your coffee stronger or weaker, so as a general rule we'd say anywhere between 60-70g per litre of coffee. It's your brew, so experimenting to find the perfect ratio for you is absolutely encouraged.

2. Rinse

Pop the filter into your Chemex and rinse with hot water. This means you only taste the good stuff in your brew, and not the taint of the paper. This is also true of a V60 or any other pour-over method which uses a filter.

Now is also a good time to preheat your vessel, which will keep your coffee hotter for longer. Swirl the hot water around the Chemex.

3. Saturate and bloom

Tip away any hot water in your Chemex and add your ground coffee to the coffee maker's filter paper.

Start the first pour. The aim here is to saturate the grounds; this should require only 80-100ml of the total water. Swirl it around a little so that all of the coffee grounds are fully saturated.

Watch as the coffee expands and de-gasses. This process is called the 'bloom'.

Wait 20-30 seconds here before moving on to the main pour.

4. Pour

Try to pour slowly and consistently, at a steady rate, and in a circular motion. This keeps the coffee grounds fully immersed without weighing the coffee down with all the water at once.

Pause every 100ml for a few seconds to keep the water level only a few mm above the grounds.

The total brew time (including bloom) should be around 5 minutes.


Chemex FAQ

What coffee should I use in a Chemex?

We like to brew a filter coffee in a Chemex. It's a light and delicate brew method which means you can really taste the nuances of coffees from different areas and different processing methods. Here are some of our favourites right now. [link to filter coffee section]

What filter should I use in a Chemex?

Chemex brewing requires a thick, starchy filter designed specifically for this type of filter brewing. You should only ever use a filter once. You can buy replacement filters for the Chemex here [link to the filters in the shop].

Where can I buy a Chemex?

We often have Chemex coffee equipment for sale over in the Extract Coffee Roasters shop, which you can find here. Our stock does fluctuate, so if we don't currently have one available, please check back later. 


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