Yogurt shop, Acai bowls, coffee And Boba Açaí bowl is a Brazilian dish made of frozen and mashed açaí palm fruit. It is served as a smoothie in a bowl or glass, and is commonly topped with granola and banana, and then mixed with other fruits. Boba pearls are made of tapioca starch that comes from the cassava root, so compassionate customers can rest easy knowing that gelatin is not used in the making of these tiny balls of deliciousness.