We try to keep things simple, but do you want more? We got you! Everything you need to know about all the coffee lingo you see around should be on this page, and if you are still confused you may use the form at the end of the page to ask our expert team.
There are two main types of coffee, Robusta and Arabica. Robusta is very robust, hence the name. It can be grown at a much lower altitude and isn’t usually bothered by diseases. On the down side, it tastes very generic.
Arabica on the other hand currently has 129 species. These species are known as varietals. The original of these varietals is known as Typica, and all types of Arabica coffee stem from this.
As coffee has come across issues such as coffee leaf rust and insects, new varietals have been formed. By taking a parent of two different types, a new, more robust or more flavoursome coffee can be born.
Coffee beans as we know them are the seed of the coffee cherry. After the coffee cherry has become ripe, they are picked, usually by hand. There are many different processes that are available to remove the flesh from the cherry exposing the seed, or bean below.
The three most popular of these are known as Natural (or sun dried), Pulped Natural (or honey) and Washed.
The Natural process is where the ripe cherries are laid out on patios to sunbathe as farmers manually rotate them, using the power of the sun to remove the flesh from the seed. Natural coffees often take on a fruitiness if done correctly.
Pulped Natural or Honey coffees usually start their processing life by taking a dip in the pool. Ripe cherries sink to the bottom, while unripe cherries float to the top and are removed. The ripe cherries are then mechanically ‘de-pulped’ to remove the flesh before being laid out to dry in the sun. Pulped Natural coffees can dry quickly as they have already been stripped of their flesh. This can lead to an increased sweetness and body in the bean.
Washed coffees follow the same process as Pulped Natural coffees. Before being laid out to dry, however, they are added to a fermentation tank to remove any remaining cherry flesh. After this, they are washed again to remove any leftover debris, before being laid out to catch some rays.
With all of the above, the beans are then traditionally rested for a month or two to improve the way the beans age. Following this, the beans are hulled to remove their protective skin before being examined and graded.
Altitude is exactly what is says – how high was the coffee grown? That bit is easy, but what difference does it make?
Coffee grown at higher altitudes is often more acidic than coffee grown at lower altitudes. Like a coffee that is sharp and acidic? Chances are it was grown at a high altitude!
This increased acidity is caused by the reduction in temperature higher up. The distance from the equator also has an impact too. For instance, coffee grown on the equator at 2000 feet will be a different distance from the sun that coffee also grown at 2000 feet in Hawaii. The altitude also controls the beans density. Higher grown coffees are often more dense than lower-grown coffees. If the coffee is grown higher this leads to cooler nights. Cooler nights leads to slower growing beans, which in turn leads to the beans being denser.
Quite self-explanatory, this determines the size of the grind. That said, why are different grind sizes needed?
If coffee is ground very finely, the water will take longer to pass through it. At the other extreme, if coffee is ground very coarse, the water can pass through it too quickly. This can lead to over or under extracting the coffee flavours. Under-extracted coffee can be sour and over extracted coffee can be bitter.
This is why different grind sizes are needed. As a guide, coffee for an espresso should be ground finely, like soft sugar. A filter grind should be ground like rough sugar whereas a french press grind should be more like caster sugar.
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