Starbucks Japan adds a gooey sweet potato Frappuccino to its menu this autumn

New drinks showcase the delicious taste and texture of cold potatoes. As summer slowly eases its grip on the country and makes way for autumn, Starbucks Japan is welcoming the change of seasons with a classic autumnal ingredient: sweet potato. There will be two new drinks showcasing the tuber: the Torori Mitsuimo Beni Haruka Frappuccino […]