That photogenic cup of bubble tea may come with hidden downsides. Tapioca pearls made from cassava can absorb heavy metals like lead, and in large amounts they may slow digestion or even cause ...
At Chun Shui Tang teahouse in central Taiwan’s Taichung City, the perfect cup of bubble tea is boiled down to a science. A tea barista fills a tall glass with black tapioca pearls 2 inches from the ...