It is taken in bazaars across the country, where tea-sellers still walk the streets of cities serving the drink to traders and their customers on metal trays.
In some parts of Azerbaijan, UNESCO noted, people add spices and herbs such as cinnamon, ginger and thyme.
"Tea culture is an essential part of daily life for all layers of society, providing a strong sense of cultural identity," said the UNESCO statement.
Among the other traditional practices the UN acknowledged on Thursday was the "traditional tea processing techniques and associated social practices" in China.