Cha mate is a traditional South American tea that is made from the leaves and stems of the Ilex paraguariensis plant. It is known for its bold and bitter taste, which is achieved through a process of steeping the leaves in hot water. Cha mate is often served in a gourd with a metal straw, and is commonly enjoyed as a social beverage. Some people prefer the toasted version, which has a smoother and less bitter flavor, but traditional cha mate remains a popular choice for those who enjoy a stronger taste.