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Minggu, 27 Mei 2018

Coffee's Process

In Coffee's Process there are 10 steps. First step it's called planting. What does that mean ? Well let me tell you guys what exactly it is. A coffee bean is actually a seed. When dried, roasted and ground, it’s used to brew coffee. If the seed isn’t processed, it can be planted and grow into a coffee tree.

Coffee seeds are generally planted in large beds in shaded nurseries. The seedlings will be watered frequently and shaded from bright sunlight until they are hearty enough to be permanently planted. Planting often takes place during the wet season, so that the soil remains moist while the roots become firmly established. So planting is a process where you plant a seed and take care of it until it grow into a coffee tree.
Second step is harvesting the cherries, after you planted coffee trees it will bear a fruit and it's called coffee fruit. After your coffee trees bear a fruit, you will harvest it. How do you harvest your fruit ? Well there are two ways :


First, Strip Picked: All of the cherries are stripped off of the branch at one time, either by machine or by hand.

Second, Selectively Picked: Only the ripe cherries are harvested, and they are picked individually by hand. Pickers rotate among the trees every eight to 10 days, choosing only the cherries which are at the peak of ripeness. Because this kind of harvest is labor intensive and more costly, it is used primarily to harvest the finer Arabica beans.


Next step is processing cherries, Once the coffee has been picked, processing must begin as quickly as possible to prevent fruit spoilage. Depending on location and local resources, coffee is processed in one of two ways:

First, the dry method is the age-old method of processing coffee, and still used in many countries where water resources are limited. The freshly picked cherries are simply spread out on huge surfaces to dry in the sun. In order to prevent the cherries from spoiling, they are raked and turned throughout the day, then covered at night or during rain to prevent them from getting wet. Depending on the weather, this process might continue for several weeks for each batch of coffee until the moisture content of the cherries drops to 11%.

Second, the wet method removes the pulp from the coffee cherry after harvesting so the bean is dried with only the parchment skin left on. First, the freshly harvested cherries are passed through a pulping machine to separate the skin and pulp from the bean. 

Then the beans are separated by weight as they pass through water channels. The lighter beans float to the top, while the heavier ripe beans sink to the bottom. They are passed through a series of rotating drums which separate them by size.

After separation, the beans are transported to large, water-filled fermentation tanks. Depending on a combination of factors -- such as the condition of the beans, the climate and the altitude -- they will remain in these tanks for anywhere from 12 to 48 hours to remove the slick layer of mucilage (called the parenchyma) that is still attached to the parchment. While resting in the tanks, naturally occurring enzymes will cause this layer to dissolve.

When fermentation is complete, the beans feel rough to the touch.  The beans are rinsed by going through additional water channels, and are ready for drying.



The fourth step is drying the beans, this process is only for the wet method the pulped and fermented beans must now be dried to approximately 11% moisture to properly prepare them for storage.

These beans, still inside the parchment envelope (the endocarp), can be sun-dried by spreading them on drying tables or floors, where they are turned regularly, or they can be machine-dried in large tumblers. The dried beans are known as parchment coffee, and are warehoused in jute or sisal bags until they are readied for export.


The fifth step is miling the beans.

Before being exported, parchment coffee is processed in the following manner:

Hulling machinery removes the parchment layer (endocarp) from wet processed coffee.  Hulling dry processed coffee refers to removing the entire dried husk — the exocarp, mesocarp and endocarp — of the dried cherries.

Polishing is an optional process where any silver skin that remains on the beans after hulling is removed by machine. While polished beans are considered superior to unpolished ones, in reality, there is little difference between the two.

Grading and Sorting is done by size and weight, and beans are also reviewed for color flaws or other imperfections.

Beans are sized by being passed through a series of screens. They are also sorted pneumatically by using an air jet to separate heavy from light beans.

Typically, the bean size is represented on a scale of 10 to 20. The number represents the size of a round hole's diameter in terms of 1/64's of an inch. A number 10 bean would be the approximate size of a hole in a diameter of 10/64 of an inch, and a number 15 bean, 15/64 of an inch.

Finally, defective beans are removed either by hand or by machinery. Beans that are unsatisfactory due to deficiencies (unacceptable size or color, over-fermented beans, insect-damaged, unhulled) are removed. In many countries, this process is done both by machine and by hand, ensuring that only the finest quality coffee beans are exported.



Step six, exporting the beans

The milled beans, now referred to as green coffee, are loaded onto ships in either jute or sisal bags loaded in shipping containers, or bulk-shipped inside plastic-lined containers.



Next step is roasting the coffee. This is a process where a coffee beans can turn brown and the caffeol begins to emerge.


Step eight, grinding coffee. In this process you can either grind your coffee beans with two methods :

First, Automatically where you use an automatic grinder to grind your coffee beans like burr grinders or blade grinders.

Second, Manually where you use a manual grinder such as mortal and pestle.



Next Step is brewing coffee. Brewing a perfect cup of coffee is the weakest link in the full enjoyment of fine coffee. Buying the finest coffee is only the beginning and can go for naught if the brewing is not done correctly. It is very easy to ruin otherwise excellent coffee with improper brewing. We realize you would like to hear that once you have purchased excellent coffee beans, the rest is as simple as pushing a button, but, all we can say is: it's time to "wake up and smell the coffee". The grower, and the roaster do their parts, and you have to do your part. If either party drops the ball, exquisite coffee will not happen.

The first thing that must be understood is what is going on during the brewing process. The aggregate (ground up coffee particles) is being exposed to hot water in order to "extract" the essential solubles (flavor compounds, solids, and oils) from the particles. That which is extracted winds up in the water, creating the infusion we call coffee. In theory, perfect extraction would get everything that's desirable out of the coffee bean and into the cup, while leaving behind all that which is undesirable. Is this possible? Currently, only in our imaginations. But some methods are better than others.


And the final step is drinking. This process is referred to as cupping and usually takes place in a room specifically designed to facilitate the process.

First, the taster — usually called the cupper — evaluates the beans for their overall visual quality. The beans are then roasted in a small laboratory roaster, immediately ground and infused in boiling water with carefully-controlled temperature. The cupper noses the brew to experience its aroma, an essential step in judging the coffee's quality.
After letting the coffee rest for several minutes, the cupper breaks the crust by pushing aside the grounds at the top of the cup. Again, the coffee is nosed before the tasting begins.
To taste the coffee, the cupper slurps a spoonful with a quick inhalation. The objective is to spray the coffee evenly over the cupper's taste buds, and then weigh it on the tongue before spitting it out.
Samples from a variety of batches and different beans are tasted daily. Coffees are not only analyzed to determine their characteristics and flaws, but also for the purpose of blending different beans or creating the proper roast. An expert cupper can taste hundreds of samples of coffee a day and still taste the subtle differences between them. 





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Blog ini merupakan tugas dari pelajaran Pengantar ilmu komputer , saya mengerjakan blog ini selama 2 hari ya nyicil nyicil biar ga pusing nanti nya.