With its timeless hourglass design and reputation for clarity, the Chemex is more than just a beautiful brewer—it’s a gateway to clean, balanced, and elegant coffee. Invented in 1941 by German chemist Dr. Peter Schlumbohm, the Chemex has stood the test of time thanks to its simplicity, scientific design, and refined flavor results.
In this guide, we’ll walk you through the Chemex brewing method step by step, explain what makes it different from other pour-over devices, and share tips to help you master this classic coffee ritual at home.
Why Brew with a Chemex?
- Clean flavor: The thick filter removes oils and fines, resulting in clarity
- Aromatic and balanced: Preserves floral, fruity, and complex notes
- Beautiful design: Doubles as a stylish serving carafe
- Great for multiple cups: Available in sizes from 3 to 10 cups
The Chemex is ideal for those who appreciate refined, tea-like brews with clarity and complexity.
What You’ll Need
- A Chemex brewer
- Chemex paper filters (bonded, pre-folded or square)
- Freshly ground coffee (medium-coarse grind)
- Gooseneck kettle for controlled pouring
- Filtered water (just off boil: 93–96°C / 200–205°F)
- Digital scale (recommended)
- Timer
Recommended Brew Ratio
A great starting ratio for Chemex is:
- 1:16 – 1 gram of coffee per 16 grams (ml) of water
- For 2 servings (500 ml): use 30–32 grams of coffee
- For 3–4 servings (750 ml): use 45–50 grams of coffee
You can adjust the ratio slightly for a stronger or lighter cup.
Step-by-Step: How to Brew Coffee with a Chemex
Step 1: Prepare the Filter
- Unfold your Chemex paper filter so that three layers are on one side
- Place the thick side against the spout
- Rinse the filter with hot water to remove paper taste and preheat the brewer
- Discard the rinse water
Step 2: Add Coffee Grounds
Add your medium-coarse ground coffee to the filter. Level the bed to ensure even saturation.
Start your timer once you begin pouring.
Step 3: Bloom
- Pour twice the weight of coffee in water to saturate the grounds (e.g., 60g water for 30g coffee)
- Let it bloom for 30–45 seconds
- This releases CO₂ and helps prevent channeling
Watch for bubbling and expansion—signs of fresh coffee!
Step 4: Pour in Stages
- Begin pouring slowly in spirals or gentle pulses
- Keep water level steady, avoiding overflow
- Total pour time: around 3.5 to 4.5 minutes
Try pouring in 3–4 stages, letting the water drop slightly before topping off each time.
Step 5: Let It Finish Dripping
Once the water has fully drained through, remove the filter and discard it.
Swirl the Chemex to mix the coffee before serving.
Step 6: Serve and Enjoy
Pour into pre-warmed mugs. The result? A clean, bright cup with high clarity, smooth texture, and elegant acidity.
Tips for Better Chemex Coffee
- Use Chemex-branded filters for proper flow and filtration
- Aim for a grind size similar to sea salt or raw sugar
- Use fresh, specialty-grade coffee with interesting tasting notes
- Rinse your filter thoroughly to avoid papery taste
- If your brew is too sour → grind finer
- If it’s too bitter or slow → grind coarser
Why Chemex Stands Out from Other Pour-Overs
| Feature | Chemex | V60 / Kalita / Others |
|---|---|---|
| Filter thickness | Very thick | Medium |
| Flavor profile | Clean, bright, delicate | Richer, sometimes more body |
| Brewing size | Great for 2–4 cups | Best for single cups |
| Design aesthetic | Iconic hourglass glass carafe | Varies (ceramic, plastic) |
The Chemex isn’t for quick brews—it’s for slow, intentional coffee moments.
Cleaning and Care
- Rinse immediately after use
- Use a bottle brush and mild soap for deeper cleaning
- Remove the wooden collar when washing
- Let air dry completely
Chemex is made of borosilicate glass—resistant to heat and breakage, but handle it with care.
Best Beans for Chemex
This method shines with:
- Light to medium roasts
- Washed or honey processed coffees
- Beans with floral, citrus, or stone fruit notes
- Origins like Ethiopia, Kenya, Colombia, and Panama
Chemex emphasizes clarity and nuance, so choose coffees with vibrant flavor profiles.
Final Thoughts: Elegance in Every Pour
The Chemex is more than a coffee brewer—it’s a ritual of beauty, science, and simplicity. Whether you’re brewing for guests or enjoying a solo morning ritual, the Chemex transforms great beans into something truly refined.
So slow down, enjoy the process, and sip coffee that’s as clean as it is satisfying.