Filtered coffee - typical Vietnamese culture

As Vietnamese people, few people don't know about filter coffee. Filter coffee is not just a style of enjoyment, but also a cultural feature ingrained in many people's subconscious.
A cup of filter coffee is special in that people can enjoy it slowly, "listen" to the slightly bitter, rich taste of each drop permeating the tip of the tongue, inhale the seductive aroma of properly roasted coffee...