1) Harvesting
The Coffee tree starts its life as a seed and after 4 to 8 weeks it develops
into a seedling. At this stage the seedling needs be handled with care making
sure the soil remains moist and does not attract too much sunlight.
After about 9 to 18 months the coffee tree will grow to about 12 inches
tall. It is a further 3 years before the tree bears fruit, (known as
cherries), and a further 6 years before it is fully mature and producing fruit
fully. At this stage the trees are ready for harvesting. This is done
manually by the locals and usually all hands are on deck.
2) Picking
A good coffee picker can pick the equivalent of 50 to 60 pounds of coffee
beans in a day. The average life in a day. span for a coffee tree is about
20 to 25 years, yielding around 2000 beans per year.
3) Sorting
Once the cherries have been picked they are ready for sorting. This
can be done in different ways depending on the outcome of the required coffee
taste. The first way is for ‘Aged coffee’ only, and involves keeping the
green bean in a well ventilated warehouse for 1-7 years. This gives the beans a
less acidic taste and a syrupy richness.
4) Processing
Dry Processing involves drying the cherries in the sun, then removing the
pulp, parchment and dried skin. This can take up to two weeks and the
beans must be continuously raked to prevent mildew.
Wet Processing this method involves putting the cherries in water;
any ones that float are removed as defective. The cherries are then
pressed by a machine which only allows the seed and some pulp to pass through
the holes. The remaining pulp is removed leaving the beans which are then
left to dry leaving about 10 - 12 percent moisture content.
5) Hulling
Machines are used to remove the parchment layer from the wet processed
coffee beans. The dry process involves removing the entire dried husk of
the dried cherries.
6) Polishing
A polishing machine is used to remove any silver skin that is left on after
the hulling process.
7) Cleaning, Sorting and Grading
Before the beans are exported tthey are sorted again by sizes and weight,
and then they are checked again for colour flaws or other imperfections. Any
beans with the slightest imperfection will be removed.
8) Tasting the Coffee
At every stage of coffee production the coffee is repeatedly tested for quality and taste. This process is referred to as cupping and takes place in a room specifically designed for this process. An experienced cupper is can taste hundreds of samples of coffee a day and still taste the subtle differences between them.
At every stage of coffee production the coffee is repeatedly tested for quality and taste. This process is referred to as cupping and takes place in a room specifically designed for this process. An experienced cupper is can taste hundreds of samples of coffee a day and still taste the subtle differences between them.
9) Roasting the Coffee
This is normally done in the importing country because freshly roasted beans
must reach the consumer as quickly as possible. The process of roasting
the coffee beans involves roasting them at 550 degrees Fahrenheit. The
beans are kept moving throughout the entire process to stop them from
burning. When they reach a temperature of about 400 degrees they begin to
turn brown and the caffeol or oil that is locked inside the bean starts to
emerge. This process is is what produces the flavour and aroma of the
coffee. Once the beans are removed from the roaster they are immediately
cooled with by air or water.
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