What Taste Of 100% Pure Coffee? Why Does My Coffee Taste Metallic?

Good coffee is pure coffee, and then you only feel the characteristic flavor of the coffee there. However, if you buy coffee from a lousy coffee producer, you may encounter many cases of coffee with a strange taste. One of those particular flavors is the taste of metallic. So why does coffee taste metallic? Please follow the article below.

What Types Of Flavors Of Coffee Can You Have?

Roasted coffee beans have more than 1000 different chemical compounds. We have about 10-25% nonpolar of these, and most of the rest are polar. Polar substances have an uneven distribution of electrons at the terminals, and they are usually soluble in water. According to the principle in chemistry, polar substances will dissolve well in polar solvents and vice versa. (this is the reason many substances don’t mix, like oil and water)

Pour the milk into a glass with cold brewed coffee on a black background

List of coffee flavors

  • Coffee tastes sour: created from extracting coffee, caused by inorganic and organic acids.
  • Coffee tastes bitter: due to metabolism during coffee roasting.
  • Coffee tastes Burnt bitter: due to the burnt roasting process or too strong coffee compression.
  • Coffee tastes Acrid: is the tongue that causes an astringent taste because the coffee is not in the right season.
  • Coffee tastes Metallic: cold like metal.
  • Coffee tastes Mild: pure taste, no strange smell, full aroma.
  • Coffee tastes bland: due to the process of extracting coffee too loose or below the allowable level
  • Coffee tastes concentrated: the body of a rich coffee extract.
  • Coffee tastes Salty: the acrid taste in coffee juice is like salt.

According to the Perfect Daily Grind, we have more than ten substances that contribute to the aroma of coffee. Some offer a distinctive flavor, such as the sulfur-based 2-furfurylthiol. This substance is correct “the smell of roasted coffee.” Although some substances bring about negative and unpleasant odors, they bring unique and harmonious scents when combined.

In addition to sulfur-based substances, we also have aldehydes, furans, and phenols. The aldehyde groups usually give a fruity smell, while the furan base provides a caramel with aroma or pyrazin gives an “earth smell”. The phenol radicals produce smoke, spice, and pungent odors.

What Does Pure Coffee Taste Like?

Pure coffee is usually naturally bitter, not harsh, and if you sip slowly, you will feel a bit sweet. But the taste does not last long when drinking water or tea, and it will lose its taste. Take a sip of coffee to feel its flavor melt on your tongue when enjoying it.

There is also a type of coffee called Arabica with a mild sour taste. It is a type of coffee that is very popular in European countries but not so popular in Vietnam.

The remarkable difference compared to some other drinks is that if you are not used to drinking pure coffee, you will be a little uncomfortable because of its bitter taste. But once you get used to it, you will gradually love it.

Brewing coffee

Some people mistakenly believe that pure coffee without seasoning has a brown color, not a dark black. Even if coffee beans are too black, their color is still unique. When you add ice, its color turns pale like Pepsi water, and when you add milk, the color becomes lighter brown. Pure coffee water is more vital than filtered water, not a paste that sticks to the tongue. That’s why pure coffee is not flexible and keeps ice.

When finished brewing a cup of coffee, scalding coffee gives off the natural scent of coffee. It is subtle and fast, not as strong as mixed coffee. If coffee connoisseurs are familiar with the taste of pure coffee, it will be easy to find interest in any other coffee.

Why Does Coffee Taste Metallic?

Coffee Brewing Water Has A High Metal Proportion

The water you brew your coffee has a high metal proportion for some objective reason. It will cause the coffee you produce to have a metallic smell. But most water sources today are carefully treated by water treatment plants unless your area is near a metal mine. But the head of coffee brewing water containing high metal is also rare.

New Coffee Processing Machine

One of the objective reasons coffee has a metallic taste is that the coffee machine is new. The metal taste in the appliance directly affects the coffee beans, making the coffee taste also have that smell when produced.

Preserve Coffee Improperly

Another reason why the coffee tastes metallic is due to improper storage. The natural substance in coffee oxidizes and leads to a strange metallic smell. When storing, you need to avoid exposure of coffee beans to air. The coffee we vacuum before sealing the bag to ensure the maximum type of oxygen in the bag. After opening the coffee package, the customer should only take the coffee needed. 


Do not leave the coffee in the bean and powder container of the grinder overnight to prevent the coffee from oxidizing and getting damp. Before locking the zipper, you should squeeze out all the air in the coffee package then tighten the zipper tightly to minimize the oxidation process in the coffee (don’t pour a large amount of coffee into the box because like coffee. 

The appropriate temperature to store coffee is at 20-25 degrees Celsius. If placed in a too hot location, the oil in the coffee will easily escape, causing the coffee flavor to fade. Coffee also has solid absorbent properties, so you need to keep them in a cool, dry place, avoiding words with heavy metal odors.

Above is information on why my coffee tastes metallic and some suggestions for helping to store coffee better. If you are curious about coffee, do not forget to visit our website regularly to read interesting articles on the topic.