The distinctive characteristic of bubble tea is the presence of chewy translucent balls of pearl tapioca (that sit at the bottom of the glass). Usually the pearls are "large pearl," larger than the "small pearl" that is customary in tapioca pudding. Cooked, large pearls have a diameter of at least 6 millimeters. Occasionally, "small pearl" tapioca is used. Both sizes of pearls are available in a variety of colors. The pearls are prepared by boiling for 25 minutes, until they are cooked thoroughly but have not lost pliancy, then cooled for 25 minutes. After cooking they last about 7 hours. The pearls have little taste, and are usually soaked in sugar or honey solutions.
Bubble teas are generally of two distinct types: fruit-flavored teas, and milk teas.
Good to know.