You can’t just grow great coffee anywhere; coffee needs a specific environment to flourish. The best conditions are near the equator at medium to high elevations, with a mild climate. If it is too cold the leaves will freeze and die, too hot and the plant may flower too quickly.
Many coffee producing countries grow both Arabica and Robusta cultivars, I will only be talking about Arabica. Within the cultivar of Arabica there are many different varietals, most stemming from the Typica and Bourbon varieties, and each coffee producing region will usually have these varietals. Along with those two common varietals, each country can have many more varietals, some exclusive to that country or region. In general, the three coffee producing regions are Africa, Asia/Pacific, and Central/South America.
Arabica coffee originated in Africa, specifically the country of Ethiopia around the 6th century, and is grown in many other countries on the continent. Kenya, Burundi, Tanzania, Rwanda, Uganda and others provide a significant amount of Arabica beans. Many countries have distinct varietals that can only be found in small regions per country. Examples of this are the Harrar/Gimbi varieties found in Ethiopia, they are distinct for being mostly dry processed and possessing a peculiar mouth feel and acidity, along with a specific chocolate/mocha flavor. To my knowledge this variety developed naturally, other African varietals have been bred specifically to fight off disease, insects, leaf rust, provide higher yield, or greater cup quality. One country that grows many different varietals is Kenya, using the SL28, SL34 and K7 varieties. The reason for this may be that Kenya is more susceptible to drought, temperature variance, insects, or other things that could leave undesirable characteristics in the cup. Many of these varieties were taken from the Bourbon, and Typica varietals grown in India in the early 1930’s. Overall it could be said that African coffees tend to have a pronounced acidity stemming from citrus or vegetable tartness. Generally they are somewhat light in body (although many coffees would beg to differ!) and they can offer a sweet aftertaste.
South Asia and the Pacific was the second place to acquire coffee through trade with the middle east and colonization by Europe. I believe the Dutch, French and English all had a part in coffee being planted and transported between Africa, the Middle East, Asia, around the whole world probably. As far as I know the most popular places to grow Arabica coffee in Asia are Sumatra, Java, Borneo, and Papua New Guinea. My coffee knowledge is limited to begin with, and on top of it I’ve only cupped maybe two or three Asian single origins. This is something I plan to change in the short future. As it stands I would say that these coffees tend to have more balance than their African counterparts. The acidity isn’t as pronounced and they tend to be more earthy, with a thicker body. I feel that these coffees hold an important role in our industry because for me they are easy to drink, something I could have multiple cups of throughout the day. I think this is a valuable selling point to customers who might be looking for an easier drinking, less acidic brew.
Lastly, we have the Central and South American growing region, these coffees have turned into my personal favorites. I think the reason I have developed an affinity for these coffees is the great diversity between each producing nations crop, along with a balance between complex acidity and sweetness. You can find coffee with a rich, bright acidity, something you might think was from Africa. On the other hand you could drink an earthy, nutty, bigger bodied coffee and swear it was from Asia. My favorite example of this is Kaldi’s Mexico Natural from last year, and this years Nicaragua Segovia. The Mexican coffee was bright, sweet and light with berry acidity. The Nicaragua is also sweet, but stemming more from a toasted nut/caramel sweetness with a thicker tobacco/leathery body. So many countries in this region support coffee growth, but the big Arabica growers are Mexico, Guatemala, El Salvador, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru, Bolivia, and certainly not last, Brazil. Like Africa this region also offers many distinct cultivars, many found in Brazil. The Mundo Novo varietal is found in Brazil, it is a cross between a Typica cultivar from Sumatra and a Bourbon cultivar found in Sao Paulo in 1931. The Mundo Nova has now replaced much of the Typica growth in Brazil, most likely due to its higher yield. This Mundo Novo varietal was then crossed with a Caturra cultivar, which resulted in a better yielding, higher quality varietal known as Catuai. El Salvador also possesses some unique varietals; the Tekesik varietal was found here and is now used around Centeral America, also the Pacas varietal, a Bourbon mutant was found here in 1909. I think El Salvador is a good place to end this monologue. It is certainly the place where my favorite coffee has come from, which doesn’t say much considering my limited palate and knowledge. But the PT’s Finca Las Mercedes from El Salvador was just sublime. It was terribly complex with a nutty/chocolate sweetness, balanced perfectly with a cherry acidity that finished very clean. The body and mouth feel were just perfectly balanced with the taste notes, smooth and very rich. A coffee you could sit and discuss for an hour at the cupping table, or enjoy multiple cups out of a Chemex. It’s coffee like this one that make you want to seek out the next perfect cup, and to no surprise the new Kaldi's Organic Bolivia Yungas and Brazil Mogiana FAF have got me pretty excited.