The coffee they sell is not totally pure, it is always mixed with corn, rice or wheat.

In my country, in the areas where they grow coffee there they sell a 1000% pure coffee, since you can see how they roast the coffee and grind it, in fact the color is not burnt black, but rather it is like a dark caramel color, and the aroma is unbeatable, and even more if they mix it with spices such as cinnamon, vanilla or sweet anise.

So the best coffee in the world is that which is not commercial, but rather that which is sold in the areas where it is produced.