At Tempura Koizumi (天ぷら 小泉), a tiny nine-seat counter is the stage for a masterclass in tempura. The chef's approach is one of precision, using low-temperature safflower oil to create a batter so thin and light it feels almost transparent. This technique puts the focus squarely on the ingredients themselves: pristine seafood sourced locally and from the nearby Noto Peninsula, alongside seasonal mountain vegetables.
Guests consistently praise this feather-light coating and the exact heat control that brings out the best in each item. The omakase menu flows with the seasons, featuring local specialties like white shrimp (shiro-ebi), sea urchin (uni), Kaga lotus root, and firefly squid (hotaru-ika). Diners single out signature bites like a crisp sheet of nori topped with uni, or a combination of white shrimp and caviar. The meal concludes with a choice of rice dish, typically ten-don (tempura over rice) or tencha (tempura with tea poured over rice).
While the food receives near-universal acclaim, some visitors note a reserved service style. The chef's English is minimal, and a few non-Japanese guests have reported feeling awkward due to seating arrangements or perceived differences in portion sizes. Others mention a slow start to the meal before the tempura service begins.
Reviewers in 2024–2026 report lunch courses from ¥13,200 to ¥16,500, and dinner from ¥15,000 to ¥20,000. One guest noted a 'no-sashimi' course at ¥15,400. With drinks and seasonal extras like matsutake mushrooms, bills can be higher; one party of two paid a total of ¥50,940. Most diners feel it offers excellent value for the level of craft, but it's wise to confirm the course price when booking, as a few have noted unclear final bills.
- Booking: Reservations are mandatory and must be made well in advance, as the nine seats sell out quickly.
- Getting There: The restaurant is a 2-minute walk from the Katamachi city bus stop.
- Seating: Seating is at the counter only. There are no private rooms.
- Payment: Major credit cards (Visa, Master, JCB, Amex, Diners) are accepted. Electronic money and QR code payments are not. A 5% service charge is added to the bill.
- Service & Language: The chef is often reserved, and English is limited.
- Photography: Photos of the food are generally permitted, but taking pictures of the chef or kitchen may be restricted.
- Parking: No parking is available.
- Smoking: The entire restaurant is non-smoking.










