CNN, an US news outlet, has recently reported an increasing number of social media posts sharing tips on how to order a drink originally from Vietnam at a major American coffee chain. This sought-after beverage is salt coffee.

The image of salt-makers wearing a conical hat with a heavy load of salt on their shoulders, looking at themselves on the salt fields, not only shows the hardships of salt-making but also creates a beautiful symbol of the workers.

Boi p'ruc is the name of the salt with leaves and seeds of the Ta Oi people in the A Luoi highland. This is the "divine" salt used for many dishes of the Ta Oi people on weekdays and traditional holidays.

The rainy season in the highlands of A Luoi is quite melancholy. In the morning, as soon as I opened the window, the mountain wind came rushing in. Looking into the distance, the Truong Son mountain range is overlapped in the light rain.