Release rule
How to Book Isegen: Reservation Release Day, Phone and Rules (2026)
いせ源 · Kanda-Awajicho, Tokyo · Hot Pot · Lunch & dinner
How to book this house
Book online through Tabelog (1–8 guests, English form) or call in Japanese for nine or more. No release day, but the November–March anko season fills winter evenings early; unreserved seats are kept for walk-ins.
- Next release
- No release day — book any time
- Lunch / dinner
- Lunch & dinner
- Phone line
- Japanese line 11:00–21:00 (03-3251-1229, for parties of nine or more; 1–8 guests book on the web)
- If a seat comes back
- We watch this house's own booking page and email anyone following it when dates appear that were not there before. We hold nothing — the seats go first come, first served.
About this house
120 seats over tatami rooms, with unreserved seats kept for walk-ins. Cancel by the day before; same-day cancellations or reduced numbers cost 50% of the course.
Read more
Lunch cannot take the two top courses.
Booking details
Exceptions and seasons
The anko (monkfish) hotpot season runs November–March; the best winter evenings go early.
Allergies or dietary needs? Make a Japanese dining card →
Next release days
No release day — book any time
Last verified September 7, 2026 · checked by our desk October 4, 2026
Source for the booking rule: the house's official site (isegen.com), read September 7, 2026.
All times are Japan Standard Time (UTC+9).
Full profile in our collectionRead the how-to-book guide
When does Isegen open its reservation book?
Book online through Tabelog (1–8 guests, English form) or call in Japanese for nine or more. No release day, but the November–March anko season fills winter evenings early; unreserved seats are kept for walk-ins. All times are Japan Standard Time (UTC+9).
How do I book Isegen from abroad?
Isegen takes reservations online through Tabelog, which you can use from abroad with your own account and a credit card. If you would rather not, our Tokyo desk can request it for you: ¥6,000 per seat, charged only if the table is secured. A free release-date alert emails you the day before, on the morning of release day (08:00 JST) and about 30 minutes before when the opening time is known; houses that open a little every day come in a weekly summary.
What time zone is the release time?
All times are Japan Standard Time (UTC+9). Release days are computed from the house's published rule and re-checked monthly.
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← All 1,504 houses in the booking calendar
Rules are verified against official notices and platform listings and re-checked monthly. Houses change their systems without warning; treat the calendar as a planning tool. For restaurants in our collection, our desk confirms the specifics for your dates when you request.