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The Complete Guide to Grinding Your Coffee

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By Daniel Bruce

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The Joys of Grinding Your Coffee

One of the most satisfying yet frustrating aspects of home brewing is seeking to master the art of grinding. As a coffee lover, there’s nothing quite like the experience of walking into a café and being greeted with the enticing aroma of freshly roasted and ground beans. The good news is you can replicate that experience in your kitchen!

The IThiscomprehensive guide will cover everything you need to know about home coffee grinding, from understanding grind sizes for different brewing methods to exploring various grinders and even delving into the technical relationship between grinding and extraction. Whether you’re a beginner or a seasoned home brewer looking for tips and reminders, this article aims to provide valuable insights.

Why Should You Grind Your Coffee?

Is grinding your coffee worth the hassle? Nowadays, plenty of specialty roasters offer pre-ground beans that can be conveniently delivered to your doorstep. So, why should you consider grinding your coffee at home? The answer is a resounding yes, and here’s why:

1. Fresher Coffee

Coffee beans are fresh produce that falls between fresh, stale, and generic. The general rule of thumb is that whole coffee beans are best consumed within 30 days of being roasted. After this period, the flavor and aroma gradually diminish, resulting in a less enjoyable cup of coffee.

Freshly roasted coffee beans on bag

When it comes to grinding, the process of going stale is accelerated once the whole beans are broken up and exposed to air. Aromatics are released, and oxidation occurs rapidly, causing the coffee to lose flavor. This is why investing in a quality burr grinder is essential. With a burr grinder, you can grind fresh beans before brewing, locking in the maximum flavor and aroma. We recommend using the ground coffee within 3-5 minutes to ensure the best results.

2. The Freedom to Experiment

Grinding your beans allows you to experiment and find the perfect grind size for your palate and preferred brewing method. This is an excellent incentive and a crucial aspect of brewing great coffee.

Each brewing method, such as Aeropress, French Press, Pour Over, and Espresso, requires a specific grind size for optimal results. When you buy pre-ground coffee, especially mass-produced varieties, there’s a risk of getting the wrong grind size that may compromise the flavor of your coffee. One solution is to purchase whole beans and have them ground at a local specialty café specifically for your chosen brewing method, such as Aeropress.

Different sized coffee for brewing methods

Grinding coffee at home opens up a world of possibilities. You can experiment with different grind sizes for various brewing methods to customize your coffee experience. A quality burr grinder is a must-have if you’re serious about exploring the depths of the coffee world.

In conclusion, grinding your coffee at home offers the benefits of fresher coffee and the freedom to experiment with different grind sizes and brewing methods. BInvestingin a burr grinder and using fresh beans can achieve the maximum flavor and aroma in every cup of coffee. So why not expand and embark on a journey of home coffee grinding? Your taste buds will thank you!

Grind Guide For Different Brewing Methods

The Importance of Freshly Ground Beans

Finally, we can say from experience that grinding your coffee beans is an enjoyable and satisfying way to up your coffee game. Whether you own an espresso machine or a hand grinder, starting your morning with the smell of freshly ground beans and a cup of brew that your own hands have ground surprisingly satisfying. If you grind your beans, you probably know exactly what I’m talking about.

Different Grind Sizes for Different Brewing Methods

The biggest challenge when grinding your beans is determining the right grind size for your preferred brewing method. Unfortunately, the universal numbers or measurements can communicate specific grind sizes. Each grinder has its markings and numbers, which can vary significantly from one hero to another. Additionally, even two models of the same hero can produce different grind sizes depending on factors such as the hero’s age and the wear of the burrs. To address this issue, the coffee industry has established generic categories of fine, medium, and coarse, with various subcategories in between.

Chart with photos showing coffee grind sizes for each different coffee brewing method; Turkish, Espresso, Pour Over, Aeropress, French press, Moka Pot

Discovering the Right Grind Size

Sadly, we can’t provide an exact setting for your specific grinder and brewing method. However, we can give you a rough indication of the grind size for a given brewing method. From there, it will be a process of trial and error to get your grind within the general ballpark and then fine-tune it using both taste and brewing time. For example, aim for a brew time of 2.5-3 minutes when making pour-over coffee. If it takes longer, adjust the grind setting to be coarser. Conversely, if it brews too quickly, make the grind size finer. Similarly, for French Press, the amount of pressure needed to push down the plunger is a good indicator of whether the grind size is right.

The Ultimate Test: Taste

While brewing time and other indicators can be helpful, taste is the most critical factor in finding the perfect grind size. Keep experimenting and adjusting the grind size until you achieve the flavor profile you enjoy the most. Ultimately, it’s all about – creating a cup of coffee that tantalizes your taste buds.

Extra Fine Coffee Grind

Photos and Recommendations

Now, let’s take a look at some photos that illustrate the different broad grind sizes and the brewing methods that we recommend for each:

Extra Fine: This is the finest grind setting, resembling flour, and it can be challenging for most grinders. It is primarily used for making Espresso and Turkish coffee (which requires an even finer grind than espresso).

Fine Coffee Grind

OK: This grind should be slightly finer than table salt and somewhat coarser than the extra delicate setting. It is the ideal grind size for Moka Pot/Stovetop, V60, and Aeropress (with a quick brew time).

Medium: This grind size is similar to the consistency of sand and is commonly found in pre-ground coffee that is not explicitly intended for espresso. It is suitable for drip machines or Aeropress (with a longer steeping time).

Medium Coffee Grind

Remember, finding the perfect grind size is a personal journey that involves experimentation and tasting. Use the provided recommendations as a starting point, and let your taste buds guide you toward the ultimate coffee experience.

Medium Coarse Coffee Grind

The Importance of Coffee Grind Size: What Consumers Need to Know

Medium Coarse

At this size, the coffee particles resemble small chunks of coffee beans, similar to rough sand. It is the ideal grind setting for brewing methods such as Kalita Wave and Chemex.


CA coarse grind is the largest size and is used for brewing methods that require the longest contact time between the coffee beans and water. It should resemble sea salt. This grind setting is perfect for French Press and Cold Brew methods.

Coarse Coffee Grind

Understanding Types of Coffee Grinders

Regarding coffee grinders, it is essential to be familiar with three categories of burr grinders. Blade grinders are not recommended due to their lack of consistency. For optimal grind size and uniformity, it is advisable to choose pre-ground coffee or invest in a quality burr grinder.

Hand Grinders

Hand grinders are compact and operated manually, usually requiring a rotating handle. They are an affordable option, offering high-quality burrs and consistent grind. Additionally, hand grinders are portable and durable. However, they can be time-consuming for espresso fine grinding and may not be suitable for grinding large quantities of beans. For more information on hand grinders, check out our article here.

Automatic Grinders

On the other hand, automatic grinders are more significant and require less effort. They are designed to grind large amounts of beans and offer convenience and speed with a button push. Although more expensive than hand grinders, they come in both stepped and stepless models, allowing for different grind settings. For our favorite automatic burr grinders, look at our guide here.

Photo of portlex hand grinder

In conclusion, understanding the importance of coffee grind size is crucial for achieving the desired flavor in your cup of coffee. Whether you opt for a hand grinder or an automatic grinder, choosing the right grind size based on your brewing method is critical to a satisfying coffee experience.

Getting Started with Espresso Grinders

Understanding Espresso Grinders

Espresso grinders are a specialized type of grinder designed specifically for making espresso—these grinders can make excellent grind size adjustments, which is crucial for producing perfect espresso shots. To achieve this precision, espresso grinders often use flat plate burrs made with high-quality materials to ensure consistency in grind size. However, it’s important to note that a good espresso grinder can be pretty expensive, especially for a quality espresso machine,

Advanced Tips For Coffee Grinding

Grinding Your Coffee Espresso Coffee Grinder

The Importance of Accuracy in Grinding

One essential tip for coffee grinding is always to use an accurate scale to measure the weight of the coffee beans. This method is much more reliable than eyeballing and allows you to replicate a delightful cup of coffee quickly. It’s worth mentioning that grinders may retain some of the ground beans on the burrs, so the weight of the beans going in may not precisely match the importance of the ground coffee coming out. This is especially significant for espresso brewing.

Purging and Adjusting Automatic Grinders

Unlike hand grinders, automatic grinders typically have a hopper where the beans are stored. When using a mechanical grinder, it’s essential to perform regular purging. Purging involves running the hero for a few seconds and discarding the grounds that come out. This is necessary because if you don’t purge, the feet produced will be a mixture of different grind sizes, making it difficult to determine the correct setting. Again, this is particularly important for espresso grinding.

Ground coffee being weighed on coffee scales

The Art of Dialing In a Grinder

Dialing in a grinder is finding the perfect grind size for a specific espresso recipe. It involves adjusting the grind size until you achieve the desired result, such as extracting 36 grams of coffee in 26-30 seconds. This is a skill that takes time to master and can only be achieved with the help of an espresso grinder.

Factors Affecting Grind Setting

The freshness of the coffee beans can significantly impact the grind setting. As the beans age, you may find that the grind setting that previously worked perfectly neither under-extracts nor over-extracts your brew. This is especially true for espresso, which requires precise brewing methods. Factors such as the roast level and altitude at which the beans were grown can also influence the grind setting. It’s common to adjust the grind size when using different batches or types of beans.

Getting Technical: Grinding and Extraction Theory

Understanding the Science Behind Grinding and Extraction

For those interested in delving deeper into coffee theory, let’s explore the science behind grinding and extraction. Due to prolonged heat exposure, dark roasted coffee beans are more brittle and soluble than lighter roasts. As a result, darker roasts should be ground slightly coarser than lighter roasts when using the same brewing method. The altitude at which the beans are grown can also impact the required grind size. When experimenting with new batches or blends of beans, it’s common to adjust the grind size to achieve optimal extraction.

Different origin Coffee beans self serve

The Importance of Grinding Coffee Beans

Understanding the Extraction Process

TMakingcoffee involves bringing roasted coffee beans into contact with hot water, which extracts the flavor and results in a delicious brew. However, the extraction process is not as simple as it seems. It can easily extract too much or too little from the coffee beans, affecting the taste.

A coffee bean consists of 30% soluble compounds that can dissolve in hot water and 70% insoluble compounds that cannot. The final flavor of your coffee largely depends on how much of the soluble part is extracted during the brewing process.

Espresso extraction

Why Extraction Matters

In coffee circles, you may have heard the terms over-extracted and under-extracted. These terms refer to whether too much or too little of the beans have been extracted into the final coffee, affecting the flavor. The ITheextraction process should ideally remove 18-22% of the coffee bean. If the extraction is less than 15%, the coffee is under-extracted and tastes sour or overly acidic. If it exceeds 25%, the coffee is over-extracted and tastes bitter.

The extraction process is closely related to the Total Dissolved Solids (TDS), which measures the percentage of dissolved coffee in the water. On average, coffee is 98-99% water and 1-2% dissolved coffee. The optimal TDS for coffee is 1.15% – 1.35%. If your coffee tastes off, it is likely because the TDS is off or you have extracted too much or too little from the beans.

Grind Size and Extraction

Grind size is crucial in determining how much coffee is extracted from the beans. Finer grounds result in slower water flow and more extraction, while coarser soils allow quicker water flow and less extraction. Imagine pouring water over a bucket of rocks versus a bucket of sand. The water passes through the stones quickly but takes longer to pass through the sand. Coffee extraction follows the same principle.

Implications for Brewing Methods

The extraction theory has important implications for different brewing methods. Immersion methods like French Press and Cold Brew, which involve immersing coffee in hot water for a long time, require a coarse grind to prevent over-extraction and a bitter taste. On the other hand, infusion methods, where water is poured or forced through the struggles, require a finer grind to avoid under-extraction and a sour taste. Espresso requires an excellent effort with its short contact time between the beans and water.

The Importance of Particle Size Uniformity

Particle size uniformity plays a vital role in the final flavor of your coffee. Cheap blade grinders often produce a mixture of smaller and larger particles among the grinds. The problem is that tiny particles are over-extract while larger particles are under-extract. Both of these can negatively impact the taste of your coffee. If you have a cheap blade grinder, consider using pre-ground coffee from a commercial hero for a better-tasting cup.

The Importance of Grinding Coffee Beans

Understanding the Grinding Process

This video by Chris Baca highlights the importance of grinding coffee beans at home. While home grinding is considered ideal, pre-ground coffee is a better choice than home grinding with a cheap grinder. It is essential to understand that complete particle size uniformity is nearly impossible. Each coffee bean has a slightly different shape, resulting in uneven grinding. The goal, however, is to strive for the most minor possible particle size distribution.

Investing in a Quality Grinder

As a consumer, finding the right grinder for your brewing needs and budget is crucial. Manual grinders start at around $150, while automatic heroes for manual brewing have a similar price range. You can expect to spend $400-$500 on an espresso grinder for espresso grinding. These premium grinders offer better uniformity in grind sizes, enhancing the coffee brewing experience.

Understanding Coffee Flavor

Coffee flavor is influenced by the amount of soluble coffee extracted from the beans (typically 18-22%) and the concentration of dissolved coffee in the final brew (ideally 1.15-1.35 TDS). Coarse grinds extract slowly and are perfect for immersion brewing methods, while finer grinds pull quickly and are ideal for infusion brewing methods. Regardless of the grinder used, the focus should always be on achieving the smallest possible particle size distribution.


Grinding coffee beans is an essential aspect of brewing high-quality coffee. Understanding the intricacies of grinding allows you to explore different flavors and enhance your drinking experience. We hope this article has inspired you to delve into the world of grinding and improve your brewing skills. Don’t hesitate to reach out with any questions or comments – happy grinding!

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