What is the color difference in coffee beans? What are the characteristics of honey processed coffee beans? Why are the anaerobically treated coffee beans uneven in color?

Many friends who have just started the game easily have the misunderstanding that the beans in a pack of coffee beans have very uniform appearance. Have uniform size and consistent "skin color." When you encounter a package of beans of different sizes and uneven colors, you will think that it is the baker's unstable quality control and the result of uneven baking.

Qianjie sells beans, so Tmall Taobao customer service can often receive feedback on such problems. It is undeniable that uneven color is indeed caused by uneven baking. But does everyone know? In most cases, such unevenness is not a baking accident. Not only that, but such beans can actually break out the richer layers of delicious coffee. As we all know, coffee beans are an agricultural product. Since they are agricultural products, it is impossible for them to maintain the same shape and state of each bean like industrial products. For example, the problems of varying sizes mentioned by Qianjie earlier mainly come from Ethiopian beans.

Because Ethiopia's coffee bean grading system is based on defect rate, which is not the same as countries such as Colombia and Kenya, where coffee beans are graded based on their size, most coffee beans in Ethiopia will not be screened for size. In a pack of Ethiopian coffee beans, uneven particle size is a very common occurrence. The amount of heat required for uneven sizes to reach the same degree of baking is different, so after baking, these uneven sized beans will have a certain color difference due to the different degree of baking. For example, you can see the existence of color differences in beans such as Qianjie Yejia Shefei Goodin and Qianjie Essi Huakui in the Qianjie bean list.

However, the color difference caused by this size is very, very small. Many times the coffee beans we see with obvious color differences are mainly influenced by their processing methods. For example, you can see obvious color differences in coffee beans from Costa Rica in Qianjie Bean List. Because whether it is Mirazu strawberry candy in Qianjie bean list, Musician Series Baja, or the newly launched Costa Rica Blackberry, they all use honey processing.

It is often shared on the front street. Honey processing is a treatment method between sunning and washing. This treatment will first peel off the coffee peel and pulp to retain some or all of the pectin, and then place the pectin-containing coffee beans on a drying bed for drying. Since pectin contains a lot of sugar, when the water in the pectin evaporates, these sugar will adhere to the surface of coffee beans. However, because the pectin content of each bean and the amount of peeled pectin are different, the sugar content that ultimately adheres to the beans is also different. The more pectin is retained, the more sugar will eventually adhere to the coffee beans. The less pectin is retained, the less sugar will be attached. What phenomena will this cause?

That's right! That is, coffee beans will have obvious color differences after roasting. These sugar attached to the bean surface will produce more caramelization reaction when it enters the baking process, so when the coffee bean with more sugar attached to the bean surface after baking, the color of the bean surface will be darker. On the contrary, the color of the bean surface will be lighter. Under the contrast of one deep and one light, the color difference is particularly obvious, especially when the medium and light baking degree is adopted.

Although we can narrow the color difference of coffee beans by deepening the roasting degree or adjusting the roasting method, deepening the roasting will wear away some of the flavor characteristics of the coffee beans themselves, and as said in front of the street, using these color differences The coffee from coffee beans will have richer layers. Because the color difference indicates that the degree of roasting of the beans will be slightly different, coffee beans with different degrees of roasting will have a small amount of different aroma performances, which can make the flavor performance of the coffee beans more layered. For example, the Costa Rican Blackberry shared in front of the front street has the flavors of flower, grape, berry, apricot peach, caramel, melon, etc.

Qianjie here is just an example. In addition to honey treatment, other methods such as anaerobic treatment that will attach sugar to the surface of beans will also cause the same color difference in beans. For example, Qianjie 90+ Manor·Eleta Rose Summer in Qianjie Bean List, we can already see the obvious color difference from its raw beans.

Of course, Qianjie does not mean that all coffee beans sold by merchants have color differences caused by processing, and there are also many problems caused by quality control, which is why many friends have the misunderstanding mentioned by Qianjie at the beginning. Therefore, when buying coffee beans, we try our best to support our suspicions through the taste rather than the appearance, so as to avoid missing a coffee bean with a unique taste due to misunderstanding ~

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