I say "bubble tea" or "珍珠奶茶 (zhen1 zhu1 nai3 cha2)". The term "bubble" does not represent what it's made of but its appearance in shape. And yes, it's originally from Taiwan and has now become so famous here and there, which kind of surprises me! "Pearl (珍珠) milk tea (奶茶)" is a more direct translation of it though. Is it (usually) said so in Australia instead?

zhengzhu naicha 珍珠奶茶

pearl milk tea in Chinese is 珍珠奶茶(zhēnzhū nǎichá) the 珍珠 means Pearl and the 奶茶 litterally means milk tea. I got the information from this site: https://www.bubbleteaology.com/what-is-boba-tea/ <a href="https://www.bubbleteaology.com/what-is-boba-tea/">what is boba tea</a>

zhen zhu nai cha 珍珠奶茶 Just is not careful the wrong,sorry

pearl milk tea， 珍珠奶茶 zhen zhu nai cha 泡的茶， pao4 de 茶 cha2 泡茶 = brew tea；