Chemex Brewing Guide: How to Brew Better Coffee Step by Step

Ever wondered why cafe pour overs taste so clean and bright compared to what you make at home? Chances are, they're using a Chemex. This Chemex brewing guide walks you through the whole process step by step, so you can get that same clarity in your own kitchen. No barista training required.

The Chemex looks like something out of a science lab, and that's half the charm. But it's also one of the most forgiving brewers you can own. Get a few basics right and it rewards you with a cup that tastes sweet, clean and layered.

What Makes the Chemex Different

The Chemex is a single piece of glass shaped like an hourglass, with a wooden collar and leather tie. It was designed in 1941 and hasn't changed much since. It didn't need to.

The real magic is in the filters. Chemex filters are 20 to 30 percent thicker than standard pour over filters. That extra thickness catches more oils and fine particles, which is why Chemex coffee tastes so clean and crisp.

If you love tea-like clarity in your cup, this is your brewer. It's especially good with bright, washed process coffees like our Colombia Single Origin, where you actually want to taste every layer of flavour.

What You'll Need

• A Chemex (the 6-cup size is the most versatile)
• Chemex filters (the square bonded ones)
• Fresh whole bean coffee, ground medium-coarse just before brewing
• A gooseneck kettle if you have one (a regular kettle works, just pour slowly)
• Scales (helpful but not essential)
• A timer

One thing matters more than any gadget on this list: fresh beans. Coffee that's been sitting on a supermarket shelf for months will taste flat no matter how well you brew it. Beans from The Folk Roaster arrive to you only days after roasting, which makes a bigger difference to your cup than any piece of equipment.

Chemex Brewing Guide: Step by Step

Step 1: Heat your water. Aim for 93 to 96 degrees Celsius. If you don't have a temperature kettle, boil the water and let it sit for 30 to 45 seconds.

Step 2: Rinse the filter. Unfold the filter so the three-layer side sits against the spout. Pour hot water through it to rinse away any paper taste and warm the glass. Tip the rinse water out.

Step 3: Add your coffee. A good starting ratio is 1:16. That's 30 grams of coffee to 480 grams of water for two decent cups. Grind your whole beans medium-coarse, somewhere around the texture of rough sand. Add the grounds and give the Chemex a gentle shake to level the bed.

Step 4: Bloom. Start your timer and pour about 60 grams of water, just enough to wet all the grounds. You'll see the coffee bubble and puff up. That's carbon dioxide escaping, and it's a sign your beans are fresh. Wait 30 to 45 seconds.

Step 5: Pour in stages. Pour slowly in circles, working from the centre outwards. Add water in two or three stages, letting the level drop a little between pours. Avoid pouring directly onto the filter walls.

Step 6: Wait and serve. Total brew time should land between 4 and 5 minutes. Once it's done dripping, remove the filter, give the Chemex a swirl, and pour.

Common Chemex Mistakes (And Easy Fixes)

Brew tastes sour or weak? Your grind is probably too coarse, or your water too cool. Tighten the grind slightly and check your temperature.

Brew tastes bitter or takes forever? Grind is too fine. The thick filters clog easily with fine particles, so go coarser and the drawdown will speed up.

Tastes flat and lifeless? Look at your beans before you blame your technique. Stale coffee won't bloom, and it won't taste like much either. Fresh, well-sourced beans fix more brewing problems than any recipe tweak.

Pouring too fast? Slow down. The Chemex rewards patience. A steady, gentle pour keeps the coffee bed level and the extraction even.

Which Beans Work Best in a Chemex

The Chemex flatters coffees with brightness and complexity. Because the thick filter strips out body, you want beans with plenty of flavour to spare.

Lighter roasts are a natural fit. Our Saturday Light Roast was practically made for this brewer, with the kind of sweetness and clarity that shines through a Chemex filter. If you want something with a bit more depth, Blue Bianca brings lovely balance to a slow weekend brew.

All our coffees are washed process, which means cleaner, brighter cups. That suits the Chemex perfectly.

Once you've nailed the basics, the Chemex becomes the easiest part of your morning. Same ratio, same pour, great coffee every time. If you're after beans worth the ritual, have a look at the range from The Folk Roaster at thefolkroaster.store. Everything is whole bean, everything is washed process, and it arrives to you only days after roasting. Your Chemex deserves nothing less.