A roadmap for starting your journey of eating your way through Family Mart’s sweet potato sweets lineup.
Though they usually have a little fruit and vegetable corner where you can pick up some bananas, a carrot, or half a head of lettuce, Japanese convenience stores aren’t really the best place to go if you’re looking for fresh seasonal produce. Japanese convenience stores are, on the other hand, exactly where you want to be if you’re looking for new seasonal sweets.
Sweet potato sweets season is here, and September 22 is essentially harvest day as Family Mart releases no fewer than 14 desserts that feature the flavor, and sometimes even the look, of sweet spuds. We realize that even the biggest sweets fans might have trouble fitting that many items into their snacking schedule, so our taste-testing reporter Natsuki Goto has sampled them all and prepared her personal list of the three she recommends eating first, then working your way to the rest if you have the time/stomach capacity.
3. Mocchi Oimo Bread (Beni Haruka) (185 yen [US$1.15])
This pillowy soft pastry visually mimics a roasted sweet potato that’s been sliced open, with an eye-catching contrast of colors to go with its hybrid design. While the outside has the texture of a soft bread bun, the inner section is a moist sponge cake, thanks to the use of sweet bean paste flavored with Beni Haruka, one of Japan’s sweetest varieties of sweet potato.
The sprinkling of black sesame seeds, a common addition to roasted sweet potatoes in Japan, adds a touch of mature sophistication, and the overall flavor is excellent. Family Mart brings out some sort of sweet potato bread pretty much every autumn, but this is one of their best yet, and anyone who likes sweet potatoes will find a lot to love here.
Before we move on to Natsuki’s number-two pick, let’s take a look at some of the also-rans in the lineup. Honestly, there wasn’t a bad-tasting treat in the bunch, so you can think of these as “not as amazing as the top three” rather than not being recommended.
▼ Caramel-scent Sweet Potato Croissant (185 yen)
▼ Satsuma Imo Sweet Potato Stick (180 yen per bag)
▼ Sweet Potato Dorayaki (216 yen)
▼ Sweet Potato Zakuhoro Cream Puff (254 yen)
▼ Sweet Potato Canelé with Caramel Sauce (285 yen)
▼ Beni Haruka Sweet Potato Terrine (298 yen)
OK, let’s get back to Natsuki’s top picks with…
2. Sweet Potato Florentine (195 yen)
Japan has a pretty broad palate in terms of desserts with overseas origins, but you don’t often see Florentines at convenience stores. For those unfamiliar with the term, Florentines are a kind of French biscuit-type cookie, coated with caramel and topped with nuts.
For this version, though, Family Mart swaps out the crushed nuts and replaces them with imo kenpi, crisp, candied sweet potato chips.
The result is an understatedly classy confectionary, which still retains a bit of a nutty nuance thanks to the aromatic caramel, plus the crunch of a conventional Florentine while adding a strong sweet potato sensation. The only complaint Natsuki has is that the Sweet Potato Florentine is a little on the small side, but it’s photogenic and very tasty, so it still gets an enthusiastic thumbs-up from her.
And before we reach the king of this hill of sweet potato desserts, let’s look at some of the other items in the lineup.
▼ Sweet Potato and Cheese Pizza Wrap (330 yen)
▼ Imo Kenpi Chocolate (286 yen)
▼ Caramel Sweet Potato Chips (248 yen)
▼ Drinkable Dairy Roasted Sweet Potato shake (278 yen)
▼ Beni Haruka Sweet Potato Monaka (225 yen)
And now, we finally come to Natsuki’s absolute, can’t-miss, number-one Family Mart sweet potato sweets pick, which is…
1. Sweet Potato Pound Cake (198 yen)
Once again the Beni Haruka sweet potato shows up to elevate this simple dessert to an exalted level, with Beni Haruka paste kneaded into the dough before baking, and chopped pieces of sweet potato added in too.
Aside from the bright, inside-of-a-sweet-potato color, there’s nothing fancy about the visuals, but that’s fine because this cake is all about pleasing the taste buds, and it does that magnificently. Family Mart actually offered a similar item last year, but the 2026 version ups the amount of Beni Haruka paste to make the taste even more richly sweet, and every bite of the soft but dense cake is a moment of joy.
As is often the case with seasonal sweets in Japan, these are listed as being available while supplies last, so you’ll want to grab yours sooner rather than later.
Photos ©SoraNews24
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