The popping boba is juice-filled pearls made with the process of spherification.  Unlike the traditional boba which is made up of tapioca starch, these are sheer concentrated juice balls made by dropping juice droplets into the tub of sodium alginate and calcium lactate solution, which encircles the juice drops and creates a juice pearl. They pop in your mouth filling it with a blast of refreshing juice! They are excellent for garnishing drinks, and other dishes.