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Coffee Beans - From Picking to Roasting

Coffee Cherry Harvesting

Coffee cherries grow along the branches of trees in clusters. The exocarp is the skin of the cherry and is bitter and thick. The mesocarp is the fruit below and is extremely sweet with a texture just like that of a grape. Then there is the Parenchyma, this is a sticky layer nearly honey-like which secures the beans inside the coffee cherry. The beans are covered in the endocarp, a protective parchment-like envelope for the green coffee beans which also have a last membrane called the spermoderm or silver skin.

Typically there is one coffee harvest annually, the time which depends upon the geographical zone of the growing. Countries South of the Equator have the tendency to gather their coffee in April and May whereas the nations north of the Equator have the tendency to harvest later on in the year from September onwards.

Coffee is generally selected by hand which is performed in one of 2 methods. Cherries can all be removed off the branch simultaneously or one by one using the method of selective selecting which makes sure just the ripest cherries are selected best ratings of coffee makers with grinders.

Coffee Cherry Processing


Once they have been selected they need to be processed right away. Coffee pickers can choose in between 45 and 90kg of cherries each day nevertheless a simple 20% of this weight is the real coffee bean. The cherries can be processed by one of 2 approaches.

Dry Process

This is the most convenient and most affordable alternative where the gathered coffee cherries are set out to dry in the sunshine. They are left in the sunshine for anywhere in between 7-10 days and are occasionally turned and raked. The objective being to lower the wetness content of the coffee cherries to 11%, the shells will turn brown and the beans will rattle around inside the cherry.

Wet Process

The damp procedure varies to the dry method in the manner in which the pulp of the coffee cherry is eliminated from the beans within 24 hours of collecting the coffee. A pulping machine is used to remove the external skin and pulp; beans are then moved to fermentation tanks where they can stay for anywhere approximately 2 days. Naturally taking place enzymes loosen up the sticky parenchyma from the beans, which are then dried either by sunshine or by mechanical clothes dryers.

The dried coffee beans then go through another procedure called hulling which gets rid of all the layers. Coffee beans are then moved to a conveyor belt and graded in regards to size and density. This can either be done by hand or mechanically using an air jet to different lighter weighing beans which are considered inferior. Coffee collecting nations ship coffee un-roasted; this is described as green coffee. Roughly 7 million lots of green coffee is delivered world broad every year.

Coffee Roasting

The coffee roasting procedure changes the chemical and physical homes of green coffee beans and is where the flavour of the coffee is satisfied.

Green coffee beans are heated up using big turning drums with temperature levels of around 288 ° C. The turning motion of the drums avoids beans from burning. The green coffee beans turn yellow in the beginning and are referred to as having the fragrance a fragrance just like popcorn.

Pyrolysis is the name for the chain reaction that produces the flavour and fragrance of coffee as an outcome of the heat and coffee essence integrating. Anywhere in between 3 and 5 minutes later on a 2nd 'pop' takes place a sign of the coffee being completely roasted.

10 Coffee Beans Facts That May Surprise You

If you're an enthusiast of all things coffee like me, you might know a thing or 2 about which coffee beans taste best, and you might even about roasting and grinding beans, but here are 10 coffee beans truths, a few of which you might have never ever heard before!

Colossal Coffee Beans - The biggest coffee bean is the Nicaragua Maragogipe, a range of the Arabica types.

Good Ideas Come to Those Who Wait - With simply the correct amount of shade, sun, rain, and the best environment, coffee plants will start producing berries including the "beans."

Coffee Bean Not a Native of Costa Rica - The Spanish visitor, Navarro, presented Cuban beans to Costa Rica in 1779.

Not Really "Beans" - Believe it or not, coffee beans are not beans at all. They are not in the bean family, but rather they are the pits found within the coffee berries.

Qualifying - Coffee beans are graded in numerous methods. Columbian beans are graded from greatest to least expensive as: "Supremo" "Excelso", "Extra" and "Pasilla".Kenyan beans are graded with letter grades AA, AB, PB, C, E, TT, and T and the grades merely describe the size, shape, and density of the bean.

For the beans, size does matter because bigger beans include more of the oil that makes coffee so yummy.

Carefully picked - Even to this day, most coffee is still selected by hand, and an employee can choose from 100 to 200 pounds of coffee berries a day!

An Acre of Coffee - How much coffee would you think to obtain from an acre of plants? One acre normally yields about 10,000 pounds of coffee fruits or cherries - which pertains to around 2,000 pounds of beans.

Imported Coffee - As much as Americans love coffee, none is grown in the Continental U.S.; the only American locations that produce it are Hawaii and Puerto Rico.

One Of The Most Expensive Coffee - The most costly coffee worldwide is Kopi Luwak, costing in between $100 and $600 USD per pound (2009).

Also one of the most Unusual Coffee - The most costly coffee is also rather potentially the most uncommon on the planet - since the berries go through the digestion system of the Kopi Luwak (a little cat-sized Indonesian animal), are then collected from the animal's waste, then the beans got rid of, cleaned up (ideally!), roasted, and offered.