Ever wonder how each type of coffee ends up at your local coffee joint? Well, the coffee graders have a large part in deciding how that happens. Although they may not necessarily trek over mountains and through streams and across the world to get there, they definitely do have a great career doing something most of us really love, drinking coffee. This is the job description of a Green Coffee Seller. This means that the coffee beans are fresh before they are roasted. The beans are examined thoroughly and specifically with a number of specifications in mind.
The beans should be fairly consistent in size and shape. This is essential for an even roast. The small beans will roast much differently than larger beans. Different size beans make roasting inconsistent because beans will roast and pop at different times.
The graders are also looking for a consistency of color. Beans that have uneven coloring could possible suggest that the beans have been dried at different rates. It is also a sign that beans are being mixed. This too will lead to poor roasting.
The beans should be divided by their region and then again by which cultivator they came from. They should be harvested and processed and then dried according to their region and cultivator as well. This will ensure a quality roasting and final product. Beans should also be processed soon after they are harvested. This is because the beans will start to ferment before they are roasted after they have been harvested. Drying the beans prevents the fermentation from occurring and ruining the beans.
It is quite common to have coffee beans floating in water in order to determine which ones are defective. Beans have different density and therefore will float differently. Finer beans occur because of dry processing. They will also have a brown ’silverskin’ which is otherwise known as a fox bean. However, if this silverskin can be removed easily by rubbing then it is not a defect; simply just evidence that it was dry processed. Then there is the consideration of under ripe beans. These will have the same silverskin but it cannot be removed by rubbing. These beans will produce coffee with an unwanted sour taste.
The art of drying beans is quite significant. Many farms and plants will take great pride in their drying processes. Improper drying is definitely easily evident, which are often chemical treatments that can be quite harsh on the bean. Beans that are dried improperly will often have a mottled appearance.
Beans that were dried properly should first be placed on a patio for the skin to dry. Then they are sent through a mechanical dryer. A superior drying process will have several stages where beans are sent through the dryer that is about 104 degrees Fahrenheit. The beans will then have an even color and perfect moisture ready for your one cup coffee maker.
Graders also look for beans with a white edge. This white edge is significant because it means that the beans were stored somewhere too humid, or their drying process was incorrect. Good, high quality beans should be even in color and have a bright appearance that is matchless. Then there is the smell. Beans should always have a fresh and delightful aroma. Sometimes poor processing will give the bean a smoky aroma or a musty smell. Give thanks to all the bean graders that provide you with only the best coffee.
About the Author:
Johnathan Bakers is writing essentially for http://www.coffee-espresso-maker-tips.com , an internet site covering information on one cup coffee brewer . His articles on
one cup coffee maker can be found on his website.
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October 30 2008 | beans | No Comments »
The Art of Coffee Grading
Grading coffee is truly an art form. It requires a lot of skill and knowledge to sure that the coffee you find in stores and shops is of the best quality. Coffee is graded before roasting and a person who does it is called a ‘Green Coffee Seller’. This grading expert is trained to know all of the characteristics to be inspected and they can tell a good bean form a bad bean with matchless skill. The average person could only dream of having the skills an experienced grading expert has. They know how good your coffee will be before it ever hits the sales floor.
Bean Traits
There are many traits of a bean that need to be evaluated in the grading process. These traits are carefully examined by the grader and sometimes it can be a tricky process because even slight differences can end up being huge differences in the end. Here are the main traits that have to be considered during the grading process:
Size and Shape: The beans should be uniform in size and shape. This will help to ensure an even roast since larger beans and smaller beans have different roasting time and that means the timing will not be able to be adjusted properly.
Color: Similar color is desirable because uneven color suggests that the beans were dried differently. It could also indicate a mixing of beans from different cultivars which will lead to problems with roasting and the resulting flavor.
Region and Cultivar: Beans should be separated by region and cultivar. This helps to ensure roasting and the final product are even and consistent. By making sure the region and cultivar are the same with each bean, it can be ensured they were dried the same.
Processing: Beans should be processed as soon after harvest as possible. After harvested beans start to ferment which producing unwanted compounds. If drying is put off too long the flavor will be greatly affected. Additionally the type of processing used is inspected. Wet processing involves separating beans of different densities by removing floating beans during the wet washing process. Dry processing is a more meticulous and efficient system of separation. Dry processed beans will have a brown color which is similar to the color of unprocessed beans. However, when rubbed the skin comes off of dry processed beans and not under processed beans.
Drying Aspects: The signs of improperly dried beans are obvious and well checked. Harsh mechanical techniques, drying too fast or infrequent turning during drying all result in a mottled appearance. Properly dried beans are dried slowly enough to let the skin dry and have several, short periods of mechanical drying. They will result in an even color and the right moisture content needed for proper roasting results.
Tell Tale Signs: White edges on beans indicate bad drying or storage and will not produce a good flavor. Bright appearance is a sign of a good bean. Smell: Finally, the smell of the bean can say a lot. They should have a fresh scent without a smoky or musty undertone.
About the Author:
Peter Wilson is publishing principally for http://www.coffee-espresso-maker-tips.com , an online site with information about saeco coffee maker and italian coffee machines. His
contributions on saeco espresso machines can be found on his site .
Tags:
coffee,
coffee grading,
coffee machine,
coffee maker,
espresso,
espresso machine,
green coffee
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October 12 2008 | coffee | No Comments »