Nước Sâm, or ginseng drink, is a popular herbal beverage in Hanoi. It is made by boiling ginseng roots with other herbs and sweetening it with honey or sugar. Nước Sâm is believed to have various health benefits, such as boosting energy and improving overall well-being. It has a slightly bitter and earthy taste, which is balanced by the sweetness of the honey or sugar. Nước Sâm is often served hot and is a popular choice among those seeking a natural and invigorating drink.