Everyone has their preferred way of drinking coffee. Maybe you like yours black, or maybe you prefer a bit of sugar in it. But have you ever tried drinking coffee with salt? Adding a pinch of salt to your cup of coffee is said to make it taste less bitter. And putting salt in coffee isn't new. In some countries, such as Turkey and Hungary, people have done this for years. But a cafe in Vietnam is believed to have started the newest trend — salt coffee. It's a little different from just putting salt in your coffee, though. Salt coffee is said to have come from a small cafe in Hue ("hwEH"), a city in central Vietnam. The cafe's name, Ca Phe Muoi, is also the name of the drink, since ca phe means "coffee" and muoi means "salt" in Vietnamese. Salt coffee is made by mixing sweet condensed milk with a base of Vietnamese coffee, and adding salted cream to the top. The cafe's owners hoped this unique drink would bring in more customers, and it did. "In Hue, salt coffee became a daily drink like black coffee or white coffee," the cafe's owners told CNN Travel in June. And it wasn't just in Hue where people fell in love with salt coffee — the cafe's website sells bottles of it to send around the country, and now Starbucks even sells its own version of salt coffee. Vietnam is one of the world's largest coffee growers, and has a rich coffee culture. Salt coffee is just one of many unique Vietnamese coffee drinks. Others include egg coffee (which has a topping of egg yolks and condensed milk), coconut coffee, and yogurt coffee.