The Professor of Chemistry Andy Bruening  in his website clarifies how the chemistry affects our lives. For example, he reveals what to do and what to avoid when preparing the perfect cup of coffee. A good cup of coffee should never be bitter. The bitterness of the coffee comes from the chlorogenic acids that are found in the dark blends. In a study which was published in 1997, researchers found that the bitterness of the coffee can be reduced by adding  salt, but there is another way to reduce the bitterness without adding salt to the coffee. Read bellow to learn how:

Ratio of water and coffee

Andy Bruening warns that you should first look at the ratio of coffee and water. Too much water will dilute the taste of real coffee and too little water will boost the bitterness. The recommended amount is 60 grams of coffee per liter of water, or seven grams of coffee for one espresso.

perfect coffee drink

How to prepare?

There are three stages for extracting the flavor. The first phase is the extraction of the fruit acids, the second phase is the extraction of the small substances, and the third phase covers the bitter elements. For the best coffee we have to guess the optimum time between the first and third stage. For Espresso coffee, the heated water should be in contact with the coffee for 20 to 30 seconds.

Water temperature

The water temperature also affects the bitterness of coffee. The ideal temperature would have to be 91 to 96 degrees Celsius. Coffee will burn if the temperature is higher than that, while lower temperatures will not extract the required flavor from the coffee.

Type of coffee and grinding

Even the best cooking techniques will not help you if you have coffee beans of poor quality. There are two types of coffee beans – Arabica and Robusta. The first type is considered to be more convenient and has a better taste than Robusta, which is packed with compounds that give a strong taste.

The perfect coffee should be ground just before preparing. Larger beans in the coffee grinder will make it harder to extract the flavors from it, and the smaller beans will make it too bitter. It is crucial to maintain the balance.

Finally, if all your efforts fail, you can add sugar and milk to neutralize the bitterness of your favorite morning beverage.