Sukesan Udon is expanding its long-running clam soup menu at stores across Japan, introducing a special large-size bowl and two new tempura combinations from September 17, 2026. The menu will be available from 9:00 a.m. at participating Sukesan Udon stores, with the end date varying by location. Clam soup items are not available at the Lalaport TOKYO-BAY store or at new stores opening from October 15, 2026.
In Kyushu and Chugoku-area stores, the new large-size clam soup costs ¥530 (tax included). The tempura clam soup set is ¥1,139, the shrimp tempura rice bowl and clam soup set is ¥1,119, and the regular clam soup with rice is ¥591.
About Sukesan Udon’s clam soup menu

Special large-size clam soup
Sukesan Udon’s new special large-size clam soup contains three times the usual amount of clams. It is priced at ¥530 (tax included).

Shrimp tempura clam soup set
This set combines large-size clam soup with shrimp tempura, pumpkin, squid, okra, and medium rice. The price is ¥1,139 (tax included).

Shrimp tempura rice bowl and clam soup set
The set features a shrimp tempura rice bowl with two shrimp, pumpkin, squid, and okra, served with large-size clam soup. It costs ¥1,119 (tax included).

Classic clam soup with rice
Sukesan Udon’s established clam soup with medium rice is available for ¥591 (tax included).

Meat and burdock tempura udon
Meat and burdock tempura udon is one of Sukesan Udon’s signature dishes and is described by the chain as its most popular menu item.
Sukesan Udon prepares its clam soup with kelp and bonito stock, rice miso, and the natural flavor of clams. The new special bowl contains three times as many clams as the standard size, while the tempura sets pair the savory soup with shrimp, pumpkin, squid, okra, and rice.
Highlights
- Special large-size clam soup with three times the usual clams: ¥530 (tax included).
- Shrimp tempura clam soup set with two shrimp, pumpkin, squid, okra, and medium rice: ¥1,139 (tax included).
- Shrimp tempura rice bowl and clam soup set with two shrimp, pumpkin, squid, and okra: ¥1,119 (tax included).
- Classic clam soup with medium rice: ¥591 (tax included).
- Clam soup dishes are for dine-in only and are not available for takeaway.
Menu & Event Details
| Item | Details |
|---|---|
| Name | Sukesan Udon clam soup menu expansion |
| Menu / items | Special large-size clam soup; shrimp tempura clam soup set; shrimp tempura rice bowl and clam soup set; classic clam soup with rice |
| Release date | September 17, 2026, from 9:00 a.m. |
| Period | September 17, 2026, onward; end date varies by store |
| Location | Participating Sukesan Udon stores in Japan |
| Stores | Sukesan Udon stores; not available at Lalaport TOKYO-BAY or at new stores opening from October 15, 2026 |
| Price | Special large-size clam soup: ¥530 (tax included); shrimp tempura clam soup set: ¥1,139 (tax included); shrimp tempura rice bowl and clam soup set: ¥1,119 (tax included); classic clam soup with rice: ¥591 (tax included) |
Before you buy
- When can I buy Sukesan Udon’s special large-size clam soup?
- It will be available for dine-in from September 17, 2026, at 9:00 a.m. The sale will continue for a limited period, with the closing date determined by each store.
- How much is the special large-size clam soup?
- The special large-size clam soup costs ¥530 (tax included) at Kyushu and Chugoku-area stores. Prices may vary by sales region.
- Can I order the clam soup menu for takeaway?
- No. The clam soup items are not available for takeaway.