Tully's Coffee Japan launches regional sweet potato drink series

Tully's Coffee Japan is launching a seasonal “OIMO” (sweet potato) drink series across approximately 850 stores starting September 2, 2026. The lineup features “OIMO Lattes” and “OIMO Shake-kools” based on Beni Haruka sweet potato sauce.

The menu includes eight regional variations featuring local ingredients such as Hokkaido butter, Aomori apples, Kasama chestnuts, and Okinawa brown sugar. The Kyushu and Okinawa regions will specifically offer versions flavored with Okinawa brown sugar. Additionally, the company will release seasonal items including apple ginger frozen tea and sweet potato donuts.

Other local autumn food offerings include a “Mitsu-imo” dessert fair at Cafe & Books Biblioteque in Fukuoka, which utilizes organic Anno sweet potatoes from Nagasaki.