Bubble tea is most commonly made with tapioca pearls (also known as "boba" or "balls"), but it can be made with other toppings as well, such as grass jelly, aloe vera, red bean, and popping boba.
Boba is another name for bubble tea. Boba can refer to the beverage itself, to the bubbles made from mixing the drink, or to the black tapioca pearls inside the tea. What Is Boba Made of? Boba balls are soft, jelly-like spheres made primarily of tapioca, which derives from cassava roots.