How to Brew Coffee with Chemex at Home: Step-by-Step Guide

Want to make café-quality filtered coffee at home but unsure where to start with a Chemex? This classic hourglass-shaped brewer makes clean, bright cups—but only if you get the details right. From fold direction to pour timing, here’s exactly how to nail it.

To brew with a 6-cup Chemex, use 32g of finely ground coffee, a 1:18 brew ratio (320g + 100g + 100g for 480g total), and a three-part pour over 3½–4 minutes. That’s the short answer. Below is the full step-by-step, including bloom, water temp, and grind.

What You’ll Need to Brew Chemex Coffee

Before you start pouring, gather these essentials: a 6-cup Chemex, Chemex-brand filters (the thick paper matters), a gooseneck kettle for control, a burr grinder, a digital scale, and fresh coffee beans. These tools ensure consistency and clarity in your cup.

Step-by-Step: Brewing Chemex Coffee the Right Way

1. Fold and Place the Filter

Start by folding your Chemex filter into a cone shape. The side with two layers should face the spout. This helps direct flow and prevents dripping during bloom.

2. Rinse the Filter

Pour hot water through the folded filter to remove any paper taste and preheat the Chemex. After rinsing, discard the rinse water—don’t let it sit in the brewer.

3. Grind the Coffee

Grind 32g of coffee to a fine setting—think table salt or slightly finer. A consistent, fine grind is key for proper extraction in a Chemex.

4. Add Coffee to the Filter

Place the ground coffee into the rinsed filter. Set the Chemex on your scale, then tare (zero) the scale to measure water accurately.

5. Bloom the Coffee

Start your timer and pour 62g of water (around 90–96°C) over the grounds. Let it bloom for 30 seconds. This releases CO₂ and kickstarts even extraction.

6. Three-Stage Pour (Total 480g Water)

After the bloom, pour in 320g of water. Once half has dripped through, add another 100g. Wait again for half to drip, then pour the final 100g. Total brew water: 480g. This slow, controlled pour ensures even saturation and a balanced cup.

7. Total Brew Time & Cleanup

The entire brew should take 3½ to 4 minutes. Once dripping stops, remove the filter and grounds. Enjoy your clean, bright Chemex coffee!

Why These Steps Matter

Each detail—from grind size to pour timing—affects extraction. A fine grind increases surface area for water to work through. The three-part pour avoids channeling and ensures all grounds contribute. The 1:18 ratio balances strength and clarity, typical for Chemex brewing.

Frequently Asked Questions

What coffee-to-water ratio does this Chemex method use?

This recipe uses a 1:18 brew ratio: 32g of coffee to 480g of water (320g + 100g + 100g). That’s roughly 15g per 270ml, standard for Chemex to achieve a clean, balanced cup.

What grind size is best for Chemex?

Use a fine grind, similar to table salt or slightly finer. This grind size ensures proper extraction without over-extracting or causing slow drainage through the thick Chemex filter.

How much coffee do I need for a 6-cup Chemex?

This guide uses 32g of coffee. A 6-cup Chemex typically brews around 30–60 oz (900–1800 ml); 32g is a standard single-batch dose for a balanced cup.

What water temperature should I use for Chemex brewing?

Brew with water at 90–96°C. This temperature range is ideal for extracting the desirable flavours from coffee without over-extracting harsh compounds.

How long should a Chemex brew take?

The full brew process—including bloom and three pours—should take 3½ to 4 minutes. Faster or slower times may indicate issues with grind size or pour technique.

Do I need to pre-wet the Chemex filter?

Yes. Always rinse the Chemex filter with hot water first to remove paper taste and preheat the brewer. Discard the rinse water before adding coffee.

Recommended FrontStreet Beans for Chemex Brewing

For Chemex, we recommend FrontStreet Coffee’s Ethiopia Huakui—bright with citrus, floral, and stone fruit notes—or their Yirgacheffe, offering juicy lemon, jasmine, and honey. Both single origins shine with the clarity a Chemex provides. Alternatively, try their Classic Blend for a balanced, sweet foundation. All work well at a fine grind and 1:18 ratio. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.