How to Use a Chemex: A Beginner's Guide

The Chemex is a classic pour-over brewer loved for its elegant design and ability to produce a clean, bright cup of coffee. If you're new to this brewing method, the process can seem a bit intimidating, but with a few simple steps, you'll be making café-quality coffee in no time.

In this guide, we'll walk you through everything you need to know: the right grind size, water temperature, pouring technique, and how to care for your brewer. We'll also share a simple recipe that you can adjust to your taste.

What You'll Need

Before you start, gather your equipment: a Chemex brewer, Chemex square filters (like the Chemex Square Filters 100 Pack), a gooseneck kettle, a scale, and a timer. You'll also need freshly ground coffee—ideally a medium-coarse grind, similar to sea salt. If you're using pre-ground coffee, aim for a consistency that isn't too fine to prevent over-extraction.

For the best flavor, use filtered water heated to about 200°F (just off the boil). If you don't have a gooseneck kettle, you can use a regular kettle and pour carefully, but a gooseneck gives you better control over the flow.

• Chemex brewer (6-cup or 8-cup works well)
• Chemex square filters (100 pack for convenience)
• Gooseneck kettle for a precise pour

Step-by-Step Brewing Instructions

Start by folding the filter: place it in the top of the Chemex with the three-layered side facing the spout. Rinse the filter with hot water to remove any paper taste and to preheat the brewer. Discard the rinse water.

Add coffee to the filter—a good starting ratio is 1:16 (coffee to water). For a 6-cup Chemex, that's about 42 grams of coffee and 672 grams of water. Place the brewer on a scale, tare it, and add the coffee.

Begin the pour: start a timer and pour just enough water to saturate the grounds (about twice the weight of the coffee). Let it bloom for 30-45 seconds. Then, continue pouring in a slow, circular motion, keeping the water level steady. Aim to finish the total pour by 3:30-4:00 minutes. Let the water drain completely, then remove the filter and enjoy.

• Use a 1:16 coffee-to-water ratio as a starting point.
• Bloom for 30 seconds to release CO2 and improve extraction.
• Pour slowly in circles, avoiding the edges of the filter.

Tips for the Perfect Cup

The grind size is crucial: too fine and your coffee will be bitter; too coarse and it will be weak. Adjust your grinder until you achieve a consistent texture. If your brew takes less than 3 minutes, grind finer; if it takes longer than 4:30, grind coarser.

Water temperature matters too. If you don't have a thermometer, let the kettle sit for 30 seconds after boiling. Also, preheat your mug or carafe to keep the coffee hot.

Experiment with the ratio and pour speed to find what you like. Some prefer a stronger brew (1:15) or a lighter one (1:17). Keep notes so you can replicate your favorite cup.

• Grind size should resemble coarse sea salt.
• Use water just off the boil (around 200°F).
• Adjust grind and ratio based on taste.

Cleaning and Caring for Your Chemex

After brewing, discard the filter and grounds. Rinse the Chemex with warm water; avoid soap as it can leave a residue that affects flavor. For stubborn stains, use a gentle scrub with baking soda or a bottle brush.

Occasionally, you may need to deep-clean your Chemex. Fill it with a solution of equal parts water and white vinegar, let it sit for a few minutes, then rinse thoroughly. This removes coffee oils and keeps your brewer looking clear.

If you have the Chemex Glass Coffeemaker Cover, it can help keep your brew warm and protect the glass. Store your Chemex in a safe place to avoid chips or cracks.

• Rinse immediately after use to prevent staining.
• Deep-clean with vinegar monthly.
• Use a cover to retain heat and protect the glass.

Brewing with a Chemex is a rewarding ritual that yields a clean, flavorful cup. With practice, you'll develop your own technique and preferences. Remember to use fresh beans, a consistent grind, and enjoy the process. For more coffee tips and gear, explore our selection of brewers and accessories.