Choosing the Perfect Coffee Grind for Chemex

Matty Victor

Are you a coffee lover who enjoys the smooth, rich flavors that a Chemex can bring to your cup? Well, you’re in the right place! If you’ve ever wondered what grind size is best for your Chemex brew, we’ve got you covered. In this article, we’ll dive into the wonderful world of coffee grind sizes and help you find the perfect grind for your Chemex brewing adventure. So sit back, grab your favorite mug, and let’s explore the art of grinding coffee for your Chemex in a relaxed and easy-to-understand language.


Welcome to our comprehensive guide on the best grind of coffee for Chemex brewing. If you’re a coffee lover, you’ve probably heard about Chemex, a brew method known for producing a clean and flavorful cup of coffee. In this article, we will explore what grind of coffee is best for Chemex, why it matters, and how to achieve the perfect grind. So, grab your favorite cup of joe and get ready to dive into the world of Chemex brewing!

What is Chemex?

Chemex is a pour-over coffee brewing method invented in 1941 by Peter Schlumbohm. It consists of a glass flask with a conical shape and a wooden collar surrounding its neck. The Chemex brewer uses a thick paper filter that helps to remove any coffee sediments and oils, resulting in a crisp and smooth cup of coffee. The key to obtaining the best flavor from your Chemex brewing method lies in the grind size of your coffee beans.

Why Grind Size Matters for Chemex?

The grind size plays a crucial role in the extraction process of coffee brewing. Different brewing methods, including Chemex, require specific grind sizes to extract the desired flavors from the coffee beans. In the case of Chemex, the grind size should be medium-coarse, similar to sea salt. This particular grind size allows for optimal extraction of flavors while preventing over-extraction or under-extraction.

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How to achieve the Perfect Grind for Chemex?

To achieve the perfect grind for Chemex, you will need a burr grinder. Burr grinders offer more control over the grind size compared to blade grinders, ensuring consistency. Follow these steps to grind your coffee beans for Chemex:

1. Choose high-quality whole coffee beans: Start by selecting freshly roasted coffee beans. Whole beans have a longer shelf life and provide a better flavor profile compared to pre-ground coffee.

2. Set your burr grinder to a medium-coarse setting: Adjust your grinder to a medium-coarse setting to achieve the desired grind size. It should resemble sea salt in consistency.

3. Weigh your coffee beans: Measure out the desired amount of coffee beans based on your preferred coffee-to-water ratio. A typical recommendation is a ratio of 1:15, meaning one gram of coffee for every 15 grams of water.

4. Grind the coffee beans: Place your coffee beans in the burr grinder and start grinding. Make sure to grind only the amount needed for your immediate brewing to maintain freshness.

5. Store any leftover coffee beans: If you have any leftover coffee beans, store them in an airtight container away from direct sunlight and heat to preserve their freshness.

6. Brew your coffee: Now that you have the perfect grind size, it’s time to brew your coffee using the Chemex method for a flavorful cup.

Benefits of Using the Right Grind Size for Chemex

Using the right grind size for Chemex offers several advantages:

1. Enhanced flavor extraction: The medium-coarse grind size allows for optimal extraction of flavors, resulting in a well-balanced and flavorful cup of coffee.

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2. Consistent brewing: With the right grind size, you can achieve consistency in each brew, ensuring a consistently delicious cup of coffee every time.

3. Prevents over-extraction: A finer grind size can lead to over-extraction, resulting in a bitter and overly strong brew. The medium-coarse grind helps to prevent this.

4. Reduces sediment: The thick paper filter combined with the medium-coarse grind size effectively removes sediments and oils, producing a clean and smooth cup of coffee.

Disadvantages of Using the Wrong Grind Size for Chemex

Using the wrong grind size can have some drawbacks:

1. Incomplete extraction: If the grind size is too coarse, under-extraction can occur, resulting in a weak and flavorless cup of coffee.

2. Clogging the filter: A finer grind size can lead to clogging the filter, causing a slow and uneven extraction process.

3. Inconsistent flavors: Inconsistent grind size can result in uneven extraction, leading to inconsistent flavors in your brewed coffee.

Difference between Grind Sizes for Chemex and Other Brewing Methods

The grind size for Chemex differs from other brewing methods like espresso or French press. Here’s a comparison:

1. Chemex (medium-coarse): The medium-coarse grind size for Chemex is coarser than espresso but finer than French press. It strikes the perfect balance for the Chemex brewing method.

2. Espresso (fine): Espresso requires a fine grind size to achieve a concentrated and bold flavor profile.

3. French press (coarse): French press calls for a coarse grind size to allow longer contact time between water and coffee, resulting in a rich and full-bodied cup.

Tips for Brewing with Chemex

Here are some tips to elevate your Chemex brewing experience:

1. Use a gooseneck kettle: A gooseneck kettle provides better control over pouring, resulting in an even extraction and better accuracy.

2. Pre-wet the filter: Before adding your coffee grounds, pre-wet the filter with hot water to remove any potential papery taste and preheat the Chemex.

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3. Bloom your coffee: Pour a small amount of hot water over the coffee grounds and let it bloom for about 30 seconds. This step allows trapped gases to escape, ensuring proper flavor extraction.

4. Pour in a circular motion: When pouring water over the coffee grounds, do so in a circular motion, starting from the center and gradually moving outwards. This technique helps to achieve an even extraction.

5. Experiment with brew ratios and water temperature: Adjust the coffee-to-water ratio and water temperature based on your personal preference. By experimenting, you can find the perfect balance for your taste buds.

Comparison Table: Grind Sizes for Different Brewing Methods

To better understand the differences in grind sizes, refer to the following comparison table:

Brewing Method Grind Size
Chemex Medium-coarse (resembling sea salt)
Espresso Fine (similar to powdered sugar)
French Press Coarse (resembling coarse sea salt)

Important Note: Make sure to adjust the grind size to suit your personal preference and brewing equipment. The descriptions provided above are general guidelines, and it’s always recommended to experiment to find the perfect grind size for your taste.

In Conclusion

Choosing the right grind size for Chemex brewing is crucial to achieving the perfect cup of coffee. The medium-coarse grind size allows for optimal flavor extraction while preventing over-extraction or under-extraction. By following the recommended steps and tips, you can elevate your Chemex brewing experience and enjoy a flavorful and aromatic cup of coffee every morning. So, grab your Chemex, experiment with the grind size, and immerse yourself in the world of delicious coffee!

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Matty Victor

An expert in tasting the nuances of coffee. often talks about the different flavors of coffee from different regions of the world "The taste of coffee is an endless journey."


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