Kenya AA is actually a classification of coffee grown in Kenya. All
Kenyan coffee is graded after it is milled. Grades are assigned based on
the screen size of the bean. Beans with a screen size of 17 or 18
(17/64 or 18/64 of an inch) are assigned the grade AA, generally the
largest bean. While the large bean size is considered by many to be a
sign of quality, it is important to note that it is only one of many
factors in determining high quality coffee.
Kenya coffee is both the most balanced and the most complex of coffee origins. A powerful, wine-toned acidity is wrapped in sweet fruit. Although the body is typically medium in weight, Kenya is almost always deeply dimensioned. Sensation tends to ring on, resonating like a bellclap rather than making its case to the palate and standing pat. Some Kenyas display dry, berryish nuances, others citrus tones. The berry-toned Kenyas are particularly admired by some coffee buyers. Finally, Kenya coffees are almost always clean in the cup. Few display the shadow defects and off-tastes that often mar coffees from other origins.
coffee beans, after milling are graded mechanically into various grades
which differ in size, weight or shape. Incorporated into the grading
system are the colours sorting machines which are the capable of
separating high quality coffee beans from light and defective ones
In Kenya grading mechanism the resulting grades are roughly described as follows:
This is the largest of all the grades in size and has been named Elephant grade in the grading. Usually there are two seeds joining together to form the seed in a single cherry. It is the source of ears when the seeds part during handling. This grade also includes the very large PB beans. Like PB this grade is normally in small quantities in a consignment.
This grade has good size formation of large beans (7.20mm screen). This grade usually fetches a higher price than any other grade.
This grade is a combination of two grades A and B A- 6.80mmscreen, B-6.20mm screen. AB is regarded as a representative of the other grades in a consignment and usually there is more coffee of his grade than of other grades in a consignment. It is also a popular grade which fetches good prices.
Round beans which usually grow as one bean in a single cherry bean. About 10% of coffee falls in this grade.
Smaller beans than B and most of the thin beans in this grade.
This grade is composed of light beans which are raged and are usually separated from all other grades.
The smallest and thinnest beans, most of the beans are in the form of chips. Most of the beans in this grade are broken and faulty. In classification, this grade is always below the other grades.
This is the coffee that has not gone through the wet processing either because it was not picked, or because it fell from the trees after ripening. About 7% of total crop falls into this grade, which generally fetches lower prices and which has sour tasting liquor.
The above grades are then subjected to a vigorous classification by liquoring Department of the board to assign the classification standards as to the quality of the raw roasted and cup taste. The cup quality is usually described as fine fairer to good, fair to average quality down to common plain liquor. Coffee of good raw quality and appearance and has a good roast also has a pleasant flavor.