How to distinguish coffee without impurities or dyes

Users can be poisoned if they drink coffee mixed with manganese dioxide powder (black coloring agent) in the battery core. Illustration photo (internet source)

The manganese dioxide powder (black colorant) in the battery core is used to mix with coffee powder and will leak into the water during the brewing process. Users can be poisoned if they drink it, more seriously, this substance can harm the nervous system, lungs, kidneys and cardiovascular system.

So how do you know the coffee you buy is pure, without any harmful ingredients?

Below are some extremely simple ways to distinguish real and fake coffee, you should note:

How to distinguish real coffee without toxic battery dyes

Prepare a glass of water at room temperature. Slowly pour 1 teaspoon into the glass of water, observe and continue to add the second teaspoon.

If the coffee is pure, the real coffee powder will be very light and float on the surface of the water. Photo from the internet

If the coffee is pure, the real coffee powder will be very light and float on the surface of the water, not sinking immediately but gradually. Then stir vigorously, if the coffee powder sinks in the water, the coffee water has a dark brown color, it is pure roasted coffee and safe for users.

In the case of coffee with a few impurities, after about 20 seconds, the coffee powder will begin to sink in the water. The reason is that this amount of impurities is heavier than the coffee so it will gradually fall in pieces.

In particular, if fake coffee powder is mixed with many toxic impurities, it will sink as soon as you put it in the cup because pure coffee powder is very light, porous, loose, and relatively uniformly smooth.

In addition, looking at it intuitively, here are a few ways to help us distinguish between real and fake:

Moisture of coffee powder

Real coffee powder has little moisture because the moisture content of real coffee beans after roasting is quite low. Mixed, impure coffee powder will be more moist, and can even clump when soaked in a lot of caramel to create color.

When mixing pure coffee powder with water, it will not be black but will be brown or dark brown. Illustration photo (internet source)

The color of coffee

When mixing pure coffee powder with water, it will not be black as many people think, but it will always be brown or dark brown, when adding ice it will be amber brown. When exposed to sunlight, the iced coffee will look light brown.

The smell of coffee:

If you are familiar, it is not difficult for you to recognize the very pleasant, attractive and very characteristic aroma of the powder.real coffee. Many people are still confused and appreciate the smell of chemical flavors that are soaked in. However, this may be the point that you find most difficult to distinguish. It can be said that you can only distinguish the smell of the cup.pure coffeewith the smell of chemical flavoring when you have repeatedly and regularly drank pure coffee.

The taste of coffee

Coffee when roasted for the right amount of time and at the right temperature will give us a cup of coffee with a bitter taste mixed with a light, subtle sour taste due to the acid components hidden behind the bitter taste in the coffee beans. If you understand the properties of coffee, you will not insist on a cup of black, strong, bitter coffee from burnt roasted beans soaked in all kinds of aromatic spices with a strong aroma. You will choose for yourself the right taste.

Typical coffee foam is quite uniform in size, more opaque and looks “thicker”, but quickly collapses. Illustration photo (internet source)

Coffee foam:

Coffee itself, when mixed with sugar, also creates a little bit of light brown foam that looks very nice. But some consumers are mistaken and have unreasonable demands for a cup of coffee to have beautiful foam. To meet customer demands, some manufacturers add surface cleaners to coffee to create foam. So, you also need to know how to distinguish between these two types of foam. If the foam is thin, has rainbow shimmer, fills the cup and takes a long time to dissolve, and the cup of coffee looks quite nice, then it is definitely soap foam. Typical coffee foam is quite uniform in size, more opaque and looks "thicker", but quickly collapses.

Above are some ways to distinguish pure coffee to help you easily recognize real and fake coffee. It is best to buy coffee with clear origin from reputable stores or famous brands to protect your health.