Why Do Some Roasted Coffee Beans Have A Bitter Taste?
All coffee drinkers at one time or another complain about having a bitter cup of coffee. Most coffee drinkers will relate the bitterness to one of the darker roasts. If asked what they associate bitterness with; they would tell you that it is the acidity of the coffee.
However, there is a problem with that conclusion. The acidity of a dark roast is less than half of what the acidity is in a medium roast.(From around 1.5% for a medium roast and as little as .70% for a dark roast. Yes, excess acidity is a factor, and some volcanic mountain soils, such as the soil on our farm in Costa Rica, needs a slight pH adjustment from time to time. Because we grow organic coffee beans,we add calcium to the soil. Costa Rican coffee beans are renowned for having just the perfect acidity. There are many different acid compounds in coffee beans, and a perfect balance in these compounds result in an excellent cup of coffee.
A Greater source of bitterness
Bitterness in roasted coffee beans can also be the result of excess caffeine. Many, if not all, large coffee companies (you are familiar with their names), blend in a certain percentage of a different coffee bean. It is called Robusta and is a very inexpensive way to expand production. Robusta has roughly twice the caffeine of the coffee bean grown in Costa Rica, which is called an Arabica bean. Arabica beans have a reputation for being the very best variety and coffee growers in Costa Rica are not allowed to cultivate Robusta beans.
So, what is the best way to eliminate the bitterness in your roasted coffee beans?
The very best way to eliminate bitterness in your cup is to purchase a very high quality organic coffee bean. Keens Beans offers one of the best Costa Rican organic coffees on the market.