Japan’s Sweet Potato Season: Varieties and Snacks in 2026

From late August into September, supermarket and convenience-store shelves in Japan begin to fill with purple, yellow, and gold packages. Sweet potato chips, baked sweets, and chocolates start showing up in noticeably larger numbers, and not all of them are labeled the same way. Some packages simply say sweet potato. Others print a more specific name on the front, such as Beni Haruka or Anno Imo. For someone browsing the shelves, this raises a small but genuine question. Why would a snack company use a specific sweet potato name instead of simply calling it sweet potato flavor? The answer begins with the potatoes themselves. Different names can point to differences in sweetness, moisture, texture, or growing area, although processing changes how much of that character remains in a snack.

What Is Satsumaimo?

Satsumaimo is the everyday Japanese word for sweet potato as a whole, not the name of any single variety. Like the word apple, it includes many different varieties. Yaki imo describes how the sweet potato is prepared rather than which variety it is.

The names on some snack packages point to something more specific, though not always in the same way. Beni Haruka and Beni Azuma are each a single cultivated variety. Anno Imo works differently. The name commonly covers Anno Beni and Anno Kogane, two varieties selected from local Tanegashima sweet potatoes and registered in 1998. The protected geographical indication "Tanegashima Anno Imo" applies to qualifying potatoes produced across Tanegashima under its production standards. Naruto Kintoki is different again. It is a regional brand for sweet potatoes produced in designated areas of Tokushima using lines descended from Kokei No. 14.

On an autumn shelf, these differences are easy to miss. Beni Haruka, Anno Imo, and Naruto Kintoki may all look like variety names, even though the names do not work in exactly the same way.

Varieties Taste Different

Japanese shops often describe these differences with two useful words. Hokuhoku means fluffy and slightly dry, while nettori describes a moist, sticky texture.

Beni Haruka is known for its high sugar content. When steamed, it can have a higher sugar content than Kokei No. 14, and storage tends to deepen that sweetness and give the cooked flesh a moister texture. Anno Beni and Anno Kogane, the two varieties sold under the Anno Imo name, are also known for a nettori texture and concentrated sweetness, with a rich golden-yellow color inside once cooked. Naruto Kintoki sits closer to the hokuhoku side: fluffier and drier once heated, with a gentler sweetness often associated with older-style hokuhoku yaki imo. Beni Azuma also sits on the hokuhoku side, with a fluffy texture and a familiar, straightforward sweetness, and it has long been associated especially with eastern Japan.

These descriptions are useful guides, not fixed promises. Growing conditions, storage time, and cooking method can all change how sweet or moist the cooked result becomes.

Yaki Imo and Japanese Autumn

In autumn, the smell of roasted sweet potatoes sometimes drifts from supermarket produce sections and specialty shops. Some stores use heated cases or roasting machines, while mobile vendors can still be found in some areas. Some people eat one while it is still warm. Others bring it home and split it with family.

Before packaged snacks enter the picture, specific sweet potato names are already visible in produce sections and yaki imo displays. Some shops label their yaki imo with a specific variety or regional name, letting customers choose between something fluffier or something moister depending on what they are in the mood for. Others simply label the product yaki imo without naming the variety.

This is why a specific sweet potato name on a snack package does not appear from nowhere. Shoppers may already know the name from the produce section, or from choosing between a hokuhoku and a nettori yaki imo.

Sweet Potato Snacks in 2026

The 2026 shelves show several different ways of naming the potato inside a snack. FamilyMart's autumn sweet potato campaign began nationwide on September 22, with several items available in limited quantities. The lineup includes caramel-flavored sweet potato chips and chocolate-coated imo kenpi, both made with Beni Haruka, and a caramel-scented croissant that names Beni Haruka in the product title and uses a whipped sweet potato filling made with Beni Haruka paste.

Morinaga released Mini Angel Pie "Anno Imo" on August 18. The official product description says the biscuits contain Anno Imo powder, while the ingredient list uses the broader term sweet potato powder. Fujiya's Country Ma'am uses a broader phrase meaning "aged sweet potato with a honey-like sweetness" in the product name.

Seen side by side, the products make the difference concrete. Some print Beni Haruka directly on the front, while Fujiya foregrounds the broader seasonal phrase. Its official product description identifies Beni Tenshi, a commercial brand name for Beni Haruka.

How Varieties Change a Snack

In sliced sweet potato chips, the potato itself remains visible, so its color and natural character may be easier to connect with the named variety. The final result still depends on slicing, frying, coating, and seasoning, so the named variety is only one part of the finished snack.

Paste, whip, and cream-based products work differently. Once sweet potato is combined with sugar, butter or oil, dairy, chocolate, or flour, the final flavor and texture come from that whole combination, not from the potato alone. A croissant filling made with Beni Haruka paste may carry some of that variety's character, but the moist quality of the cooked potato may not appear in the finished pastry in the same way once it has been turned into a filling and combined with the other ingredients.

The same variety name can appear on products that use the potato in very different forms, from whole slices to paste or powder. What the cooked potato is usually like, what processing adds or changes, and what impression the name creates on the package do not always match. The name is therefore a clue to the ingredient choice or the flavor direction being presented, not a guarantee of the finished texture.

Why the Variety Name Matters

Shoppers who recognize names such as Beni Haruka or Anno Imo may already have a rough idea of the sweetness and texture to expect. A name can also tie a snack back to something already familiar from a yaki imo stand or a produce shelf, or simply signal that a product belongs to autumn rather than showing up as a generic sweet potato flavor any time of year. A name may identify a variety, a commercial brand used for that variety, or a production area when a protected regional name is used. Which meaning applies is not always clear from the front of the package alone.

A Starbucks cake released in September makes this difference easy to see. Its description gives Beni Haruka a light, refined sweetness and Anno Imo a richer, honey-like character, placing two distinct qualities side by side.

Flavors and Packages in 2026

Several of the 2026 packages above use purple, yellow, and gold, echoing the purple skin and yellow-to-gold flesh often shown in images of sweet potatoes. Some, like FamilyMart's caramel-flavored chips, show the sliced potato itself on the package. Others show a roasted sweet potato or its golden interior.

Caramel and chocolate also appear repeatedly in the examples above, pairing the sweet potato theme with familiar confectionery flavors.

Sweet potato product descriptions in Japan often use words such as yaki imo, mitsu, nettori, and hokuhoku. Mitsu suggests a honey-like or syrupy sweetness, while mitsu imo is commonly used for sweet potatoes associated with that rich sweetness. Some packages place a specific sweet potato name prominently on the front, while others foreground broader phrases such as mitsu imo. Together with color and photography, these words quickly suggest how the sweetness or texture is being presented.

Seen together, the colors, photos, and familiar texture words make the shelf feel autumnal even before the weather has fully cooled.

Satsumaimo and U.S. Sweet Potatoes

Sweet potatoes sold in the United States also vary in color, moisture, and texture. Skin and flesh range from pale yellow to deep orange to purple, while cooked textures range from relatively dry and fluffy to soft and moist. Sweetness also varies by variety and preparation.

Naming adds another layer. In the United States, orange-fleshed sweet potatoes are often called yams in everyday speech and may appear with the word "yam" on grocery labels, although the label must also identify them as sweet potatoes. True yams are a different plant altogether, which can make it harder to line up what is being described from one country to another.

Japanese satsumaimo includes both hokuhoku and nettori varieties, so the term does not point to one fixed color, sweetness, or texture.

How Long Does the Season Last?

Exactly how long the sweet potato season runs depends on where you look. Supermarkets and specialty shops often continue selling yaki imo through the cooler months, and some mobile vendors do as well, although timing differs by store and region. Snack aisles often start earlier, because packaged autumn releases often begin before the weather feels fully seasonal, while many parts of Japan can still feel warm.

In 2026, some autumn products appeared as early as August. FamilyMart's lineup launched on September 22, with its chips and chocolate-coated imo kenpi both available in limited quantities. Starbucks lists a September 2 start date but no fixed end date, noting that sales may finish early.

Not everything is labeled as limited time, and not everything disappears the moment autumn ends. Depending on the product, some may remain on shelves into winter or belong to a regular lineup rather than a seasonal release. Others are gone once the batch runs out, with no guarantee of coming back the following year.

A launch date, a limited-time label, or a quantity-limited note is usually the clearer signal, since the word "autumn" printed on the front does not say much about timing on its own. The sweet potato selection does not disappear all at once. As the shelf changes a few products at a time, shoppers can still compare specific sweet potato names and seasonal labels along the way.