Coffee – The Bean Grader’s Art
September 21st

Have you ever wondered what determines why some coffee beans
make it into your local shops and others don’t? Well, coffee graders ensure that you receive the best possible coffee.
A ‘Green Coffee Seller’ is a person who helps to grade the coffee when it is green (before the roasting process). Graders have to look for a large variety of traits when they choose suitable coffee beans.
What Does A Great Coffee Bean Look Like?
Two of the biggest traits a grader looks for are size and shape. If some beans are larger than others they will not all roast at the same speed, which will cause an inconsistent flavor in the coffee. As for color, differences in color usually mean that the beans are either dried differently or mixed from different cultivars. That can be a major problem because beans need to be separated by region and cultivar if the final product is to be the best possible brew.
Coffee beans undergo a drying process soon after they are picked. The drying process is designed to keep the beans from fermenting.
Ripeness
Coffee beans can have a brown coating called a ’silverskin’, known as a ‘fox bean’ in Brazil, after they’ve been dry processed. However, under ripe beans can also have a silverskin. There’s a simple way to tell the difference though. The silverskin can be easily rubbed off if the bean has been dry-roasted properly. If the silverskin doesn’t rub off, the bean is not ripe enough. An under-ripe bean leads to a sour tasting cup of coffee.
There are many types of art in the world. Drying coffee beans is one of them. Sometimes, processors try to cut costs or save time by using harsh drying processes. If the beans are not turned often enough during the drying, or if they are dried too quickly, it can cause the beans to become discolored.
Drying Process
On the other hand, if the beans are dried correctly, they will go through a lengthy process of being first dried on a ‘patio’ and then mechanically dried several different times. Usually, beans that spend a few short sessions in the dryer come out superior to those that stay in the dryer for one long period of time.
All of these things are things that a coffee grader needs to be on the lookout for. Also, they look for things, such as beans with white edges, which is a sure sign that the beans were either not dried well to begin with or else they were stored improperly after drying.
Wonderful Aroma
Like everyone else on the planet, a good grader also smells the coffee beans. As you know, if you drink coffee on a regular basis, good coffee will smell fresh. Graders also try to detect other odors, such as smoky or musty odors, that might be left over from the time in the processing center.
So, the next time you’re about to take a sip of your favorite cup of coffee, take a minute and thank the graders who make sure it’s the perfect cup!
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