Home Coffee Roasting Green Bean Buying Guide

Colombia or Ethiopia? Washing or honey treatment? Bourbon or Tibica+Cadula hybrids? Raw beans have many properties and differences to consider, which affect not only the taste but also how you roast the beans.

Here are some of the most important considerations:

That is, the environment in which coffee is grown, including climate, humidity, soil, etc., will affect the aroma and flavor of the coffee. Slowly narrow the selection criteria from a wider range, and compare the beans from different producing countries and regions before comparing the differences between the estate and the batch.

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Coffee is divided into "species" and "variety". The variety is listed under the species, and the difference in variety will have a huge impact on the flavor of the coffee. Tasting yellow bourbon, SL-28, or geisha will bring a completely different sensory experience.

Generally speaking, higher altitudes will have lower temperatures, which will slow down the growth of coffee berries, which in turn will allow the berries to develop higher sweetness. In the end, this coffee will have a richer flavor, sweetness, and acidity will also be wonderful for lower altitude beans.

When considering altitude, don't forget that different production areas have different temperatures. For example, in Hawaii, as long as coffee is grown at an altitude of 600 meters above sea level, it will be too cold, but Hawaiian Kona is quite famous. But in the Colon Islands of Ecuador, coffee grown at an altitude of 200 meters can be defined as specialty coffee. These must be taken into consideration when evaluating coffee planting altitudes, especially coffee from different producing countries or different continents.

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How coffee beans (coffee seeds) are taken out of the fruit.

In sun-treated/dry-treated coffee, the whole fruit will be directly exposed to the sun, and then the outer layer of pulp is removed, making the coffee beans sweeter and more fruity. Washed/wet-processed coffee will remove the pulp before drying, so it will have less sweetness, but at the same time, the flavor will be more clean, and the acidity will be brighter. Honey-treated coffee will first partially remove the pulp, leaving part of the pectin layer for exposure, which makes honey-treated coffee more sweet and fuller than washed coffee.

In addition to the three more common processing methods above, some processing methods may also be encountered, such as monsoon processing, wet strip processing, fermentation test methods, etc. These processing methods usually belong to a specific area, such as monsoon processed coffee, which will only be stored In a warehouse in India during the wet season.

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You must taste it before knowing what coffee you want, and it's a lot of tasting.

Try different types of coffee, and make tasting notes for each coffee, try to score one to ten points for each cup of coffee, and then add sensory notes, such as acidity, sweetness, body, and taste, and aftertaste, etc. You can also mark the flavor and aroma of the coffee. Whether it is your favorite flavor or not, if you can obtain information, you can also write down basic information such as the producing area, variety, altitude, and processing method.

Do you have any idea about finding green coffee beans? As long as you understand the above, you can quickly filter out the coffee you like and dislike.

If you are brewing coffee roasted by someone else, observe the coffee beans and note the roasting temperature. Is there any oil on the surface of the beans? Does it have a chocolate-like color? Or is it more like cinnamon?

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The degree of roasting affects the flavor and aroma of coffee. Generally speaking, the lighter the roasting degree, the easier it is to taste the original special flavor of the beans, including fruit aroma and acidity. Because the roasting process will increase the roasted flavor of the beans, and these flavors can easily cover the natural flavor of the beans. Darker roasts usually have a thicker mouthfeel, lower acidity, and richer oil on the surface of the beans.

If possible, you can order a single-origin coffee at a specialty coffee shop. This will give you the opportunity to learn about these coffees with the barista and distinguish the flavors of beans from different regions.

Many green bean sellers can sell green beans online and ship them worldwide, but before you place an order, please make sure of the final cost, bean availability, and other practical points.

Some green beans may be difficult to obtain in certain seasons. After all, coffee is a crop and has its harvest time. However, different producing countries have different harvest periods. Just like bread and fruit, freshness affects the quality of coffee. Most people don't want to buy old beans or old beans that are more than one year old.

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In addition, some coffee may be too expensive for you to drink every day. There are also sellers who are only willing to sell large quantities of green beans. Once you buy such a large amount of green beans, would you be willing to bake and consume these green beans? Even if you can consume it, do you have enough storage space to properly store the green beans?

Now that you know more about coffee beans, you found some samples for comparison and made cupping notes. At this time, you finally want to buy some green beans and roast them at home.

You can experiment first, select a production batch of coffee, and use three to five different roasting techniques to present this coffee. Then select different batches of coffee, and roast these different batches with the same roasting technique. Recording the results of these two sets of experiments and comparing them will help you understand the degree of roasting and the application and correlation of different coffee beans. Then repeat these actions: match different coffee beans with varying roasting levels until you roast your favorite coffee flavor.

Cupping will also allow you to get a lot of information in a short time by tasting a large number of cups of coffee at the same time and writing down the flavors you drank. Learning how to cup it can also help assess the quality of your roasted coffee.

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How do you know where there is a cup test? Coffee exhibitions, specialty coffee shops, any occasions open to the public for cupping, you can pay more attention to coffee-related communities and fan pages.

The Specialty Coffee Association SCA also provides some coffee sensory and roasting training courses. These are tools that roasters can freely obtain. Of course, there is much related information on the Internet and coffee books, but it is necessary to verify the correctness of the content.

There is nothing better than drinking your own roasted coffee. This thing expands the range of coffee you can choose and allows you to explore your favorite and best coffee for you.

Finally, remember that research is very helpful, but the best way is to experiment by yourself. The more coffee you drink and the more comparisons you make, the easier it is to find the coffee you like. It's better to take action!

As a coffee fan, do you know what is macchiato? You can search for more articles about macchiato to understand what macchiato is.