Japan Green Tea Center Tea Boutique Instant Yakiimo Latte 84g This instant drink reminds one of a baked sweet potato with its stone-roasted aroma and the gentle sweetness of sweet potatoes. The luxurious use of “Beni Azuma,” which is known for its soft texture and refined sweetness, gives the drink a taste reminiscent of nostalgic baked sweet potatoes from a street stall. Since it is a powder type drink that can be easily dissolved in hot water, the amount of powder can be adjusted to enjoy the sweetness to your liking.