Subtitles section Play video Print subtitles What is boba made of Boba, also known as tapioca pearls, are small, chewy balls made primarily from tapioca starch, a carbohydrate extracted from the cassava root. To make boba, tapioca starch is mixed with hot water to form a dough, which is then rolled into small spheres. The pearls are typically boiled until they reach the desired soft and chewy texture. Some boba may also contain additional ingredients, such as sugar or food coloring, to enhance flavor and appearance. Boba is most commonly found in bubble tea, a popular Taiwanese drink, where it adds a unique texture and a slightly sweet taste.