Boso Biwa Mochi: Soft Chiba Rice Cakes with Loquat Jam and Custard

When people list the best-known specialties of Chiba Prefecture, peanuts are usually mentioned first. Spiny lobster, Japanese pears, loquats, and soy sauce are also closely associated with the prefecture. Among those products, fresh loquats are probably the hardest for ordinary visitors to find.

One reason may be that Chiba’s main loquat-growing area is in Minamiboso, the warm southern part of the Boso Peninsula. Unless a trip takes you that far south, there are relatively few opportunities to see or buy the fresh fruit.

Even when fresh loquats are unavailable, however, souvenir shops often carry several sweets and processed products inspired by them. I had previously tried a Minamiboso loquat roll cake. On this occasion, I chose a box of biwa mochi so that I could experience the fruit in a different kind of confection.

I purchased the sweets at Michi-no-Eki Ichikawa, a roadside station that opened in 2018. Although Ichikawa is not in the southern Boso growing area, the shop offered a useful selection of regional Chiba products.

Boso Biwa Mochi by Sawarabi

A box contains six pieces and costs ¥306. The modest price makes it easy to buy for yourself as well as for a small souvenir.

The outer wrapping features a large illustration of a loquat. It also clearly states that the filling contains loquat jam made with fruit grown in Chiba Prefecture, an important point for anyone seeking a genuinely local product rather than only a loquat-flavored sweet.

Michi-no-Eki Ichikawa had several different loquat confections on its shelves, so deciding which one to take home was more difficult than expected.

This particular box is compact, but the affordable price made it appealing as an everyday snack. I bought it with the intention of sharing it casually at home rather than saving it for a formal occasion.

The best-before date is printed on the back of the package. The box I purchased was good for approximately one month from the date of purchase, which provides enough time to carry it home and share it later.

Now let us remove the outer wrapping and look inside.

Inside the box are six small, bite-sized rice cakes. Rather than being individually wrapped, all six pieces are vacuum-sealed together in a clear plastic tray.

The vacuum packaging keeps the soft mochi neatly arranged and gives a clear view of their warm, pale orange color, which is intended to resemble ripe loquat fruit.

Once the plastic is opened, the six pieces can be separated easily. Their small size makes them convenient to serve with tea or to share among family members.

Each piece is round, smooth, and just large enough for one or two bites. The color and compact shape give the sweet a pleasant, approachable appearance.

What Does Boso Biwa Mochi Taste Like?

With the package and appearance checked, it was time to taste one.

Cutting the rice cake reveals two fillings inside the loquat-colored mochi: fruity loquat jam and smooth custard cream. The combination makes the center look richer than the simple outer appearance suggests.

The mochi itself is very soft and has a pleasantly springy, chewy texture. It yields easily when bitten, so the small piece is comfortable to eat and does not feel excessively dense.

A recognizable loquat fragrance spreads from the jam. The custard adds a mellow, creamy quality that softens the fruit’s flavor and gives the sweet a familiar dessert-like richness.

For an adult palate, the combination may feel slightly sweeter than necessary. The children, however, seemed to like that sweetness and enjoyed the pieces quite enthusiastically. It is easy to imagine this being especially popular as a family snack.

Fresh loquats are considered a premium fruit and can be expensive. They are also seasonal and not something many people can eat whenever they wish. This mochi therefore provides a simple and affordable opportunity to enjoy the aroma and image of Chiba loquats without having to buy the fresh fruit.

It is not a substitute for biting into a ripe loquat, but as an inexpensive regional confection it communicates the character of the ingredient clearly and works well as an accessible Chiba souvenir.

Thank you for the treat.

For more souvenir ideas from Chiba Prefecture, see the page below.

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Boso Biwa Mochi Product Info, Expiration Date, Manufacturer