How do you avoid buying greasy coffee beans?

dark roast coffee

Do you know that? Fatty coffee beans. I used to think that that was the indicator of good and tasty coffee, but nothing could be further from the truth. Fatty coffee beans are often roasted too dark, too old and simply of very low quality. And they are also super bad for your coffee gear . Have you ever experienced this? Don't worry, in this extensive blog post we will not only delve deeply into the cause of this phenomenon, but we will also give you some crucial tips and advice to prevent you from being confronted with this big surprise again in the future.

We will also look at how fat on coffee beans can affect the taste experience and how to best store your coffee beans to maintain their quality. So, brace yourself for a deep dive into the world of coffee beans and discover how to enjoy the perfect cup of coffee every time.

How do coffee beans get greasy?

Green coffee beans

Coffee beans can become greasy for a variety of reasons, but the most common cause is undoubtedly the roasting process. When coffee beans are roasted, especially dark roasts, the natural fats in the beans draw to the surface, resulting in an oily appearance.

This oily layer is not only visible, but can also affect the taste and the way the coffee interacts with machines. In addition, the roasting process allows CO2 to escape from the beans, a natural part of the chemical reactions that take place.

This CO2 reacts with oxygen in the air, which contributes to the formation of oil on the surface of the beans. So it is interesting to see that the methods and intensity of roasting have a direct influence on the chemical composition of the coffee bean, which in turn affects both the appearance and taste of the coffee.

Tips to avoid buying oily coffee beans

As a lover of good coffee, you undoubtedly strive to enjoy the freshest and highest quality beans available.

It is not always easy to find the right coffee beans. And of course you certainly don't want to end up with a few greasy coffee beans. But how can you be sure that you choose the right coffee beans?

  1. Opt for lighter roasts : Many people lean toward darker roasts under the misconception that they offer a richer flavor. However, dark roasting is often the primary cause of oily beans, which can lead to a bitter and burnt taste . Lighter roasts retain more of the coffee's unique flavors and aromas, while having a lower fat content on the surface of the bean. So from now on choose a medium roast. Believe me, the flavors you hear flying around you are not normal.
  2. Buy fresh and in small quantities : One of the secrets to a great cup of coffee is freshness. Fresh coffee that has recently been roasted and packaged has had less time to bring fats to the surface, greatly reducing the chance of a greasy texture. Buying coffee in small quantities ensures that you always use the freshest beans. Plus, this gives you the opportunity to explore different types and roasts, making coffee drinking an adventure rather than a routine.

By following these tips, you will see that your coffee experience will be a lot better!

The role of a good coffee roaster

An excellent coffee roaster knows the intricacies of the roasting process and knows exactly how to get the ultimate taste and quality from each bean, without it becoming greasy. This brings us to the importance of 'small batch' and 'micro roasting'.

Small Batch and Micro Roasting

With small batch roasting, every bean is cherished and the roaster pays attention to every detail, from the flavor profile to the origin of the beans. This precision work leaves no room for errors and ensures consistently high quality.

Micro-roasting goes one step further and treats almost each bean individually to highlight its unique properties and flavors. The craftsmanship involved reveals the true art of coffee roasting.

At Zwarte Roes, where craftsmanship and sustainability go hand in hand, you not only get coffee but also a story. Every sip tells you more about the origin and craftsmanship behind your cup.


To enjoy the best coffee, it is essential to avoid oily coffee beans. By choosing freshness, lighter roasts, and coffee from artisan roasters that use small batch or micro roasting techniques, you can ensure a superior coffee experience.

Discover the magic of really good coffee and let the love and care put into every cup light up your day. With the right choices and some attention to detail, you can enjoy the perfect cup of coffee every day, free of greasy beans but full of flavor and stories.