Japanese Food

Ishi-yakiimo, or Japanese stone-roasted sweet potato, is a traditional snack made from sweet potatoes slowly roasted on heated stones. This unique method gives the potatoes a crisp, slightly caramelized skin and a moist, naturally sweet interior. The gentle, even heat from the stones draws out the potato’s natural sugars, creating a rich, deep flavor.

When you break one open, the golden flesh releases a cloud of sweet steam and a comforting aroma. Its simple, wholesome taste makes it a true treat during the colder months.

In the past, ishi-yakiimo was sold from food stalls and trucks, often announced by the familiar call of “Ishi–yakiimo!” echoing through the neighborhood. Today, electric roasting machines make it easy to find freshly roasted yakiimo year-round in supermarkets and convenience stores.

Made without any additives and relying solely on the natural sweetness of the sweet potato, yakiimo remains a healthy and heartwarming snack loved across Japan. If you spot one during your stay, don’t miss the chance to enjoy this cozy taste of Japanese autumn and winter.