There is nothing else like Isu in the city of St. Petersburg. It has a completely unique and exceptional menu. The restaurant has been described as “Japanese-Fusion”, “Izakaya”, and “Nikkei”. One’s first reaction might be, “Well, which is it?” If you’re familiar with these three concepts and the differences, and then you work your way through the menu, you’ll realize that all three are correct.
In brief, Japanese-Fusion means Japanese food mixed with any other type of cuisine. In this case, it would be the American-style sushi rolls with rice on the outside. (See the maki section of the menu.)
Izakaya is a Japanese style of dining with small plates meant for sharing. Several items on Isu’s menu fit here too. Finally, Nikkei is Japanese-Peruvian cuisine that originated with Japanese immigrants in Peru. Both Japanese and Peruvian cuisines are seafood forward. One of the most obvious and frequent ingredients defining nikkei is the use of raw fish and ají.
Ají is the word Peruvians use in place of chile, or chile pepper. Ají amarillo, or yellow chile pepper, is one of the most prominent used in Nikkei cuisine. Rocoto, a round red pepper, is another one.
Isu is in the basement of Fortu with its entrance on Beach Drive. They both have the same ownership and management team.
Lori and I had a visit to Isu with our friends Nick and Scott in December 2025, and then another visit in March 2026 with our friends Ronnie and Bobbi. For our December visit, every single bite of food was flawless, and we ordered a ton of food. We again ordered a huge amount of food in March, and only one item had an issue. There were two other items that were changed from the original versions where we liked the originals better.
Aside from Sushi Sho Rexley, this is by far the highest quality sushi / sashimi in all of St. Pete. Many of the fish are flown in whole from Japan and broken down in house. Here’s a behind the scenes photo of a tuna being broken down in Isu’s kitchen.

The menu is divided into four sections. Maki – sushi rolls with eight choices. Cold – five choices of raw seafood with other ingredients. Nigiri & Sashimi – raw seafood with or without sushi rice. Hot – cooked steak, seafood, dumplings, etc.
MAKI
Between our two visits some menu items changed, so we ordered them again. We thought most of the changes were for the better, but two were not. We preferred the original steak & egg maki over the new version, and hope they decide to change it back as it was a huge difference in how much better the original was. We would re-order the old one, but not the new one.
However, the Bluefin Maki was outstanding as well as the Miso Salmon Maki. The Bluefin had buttery rich tuna with creamy avocado, sweet-savory miso onion, and a light crunch from the crispy quinoa. (Quinoa is quite popular in Peru with it being part of the region it comes from.) The Miso Salmon with savory glazed salmon, bright herbs, citrusy lime, and a creamy, umami-packed miso finish just melted in your mouth.




COLD
As we move to the Cold section of the menu we find the other changed item in which we preferred the original, which is the Akami Crudo.
Technically, the two “crudo” dishes in a Nikkei restaurant should be called tiradito. So, Akami Crudo should really be Akami Tiradito. Ají amarillo sauce – bright in color and flavor – is one of the most popular sauces to use in this type of dish. We liked the original better as it had a much more flavorful pure ají amarillo sauce. The new version has a creamy ponzu added which takes it in a different direction than the traditional. It’s still a good dish though, and the new slicing on the fish is much more elegant.


Also from the cold section, the Shima Rocoto with delicate, buttery striped jack with sweet heat from rocoto honey, earthy truffle depth, and a crisp quinoa crunch is an excellent choice.

Our last item from the cold section was the Classic Ceviche. They nailed it, but they did change one thing that a Peruvian might not like, but this gringo appreciated. There are usually one or two large slices of sweet potato in a classic Peruvian ceviche, but in this case there were five or six medium diced (half inch cubes) of yellow sweet potato. I think this is a nice deviation from the traditional big clunky pieces of potato in a dish that otherwise has small elegant ingredients.
(Potatoes are quite prominent in Peruvian cuisine as there are over 4,000 varieties grown there. They also have over 55 varieties of corn, two of which are in the ceviche – Choclo on the left and Cancha on the right in the photo below.)
Peruvian ceviche is also its own thing – different than Mexican or Spanish – with some similarities to Ecuadorian. A defining characteristic of Peruvian ceviche is the Leche de Tigre, or “tiger’s milk” sauce / marinade. The dish is served with a spoon because you want to get every drop of the sauce. It has a citrus tang like other ceviches, but is much more complex containing white fish trimmings, fish broth, ginger, garlic, celery, cilantro, onion, ají, and finally – freshly squeezed lime juice. This is blended and strained for the final product.
The Classic Ceviche is a must-order for a true taste of Peru.

NIGIRI & SASHIMI
The Nigiri & Sashimi section has 12 items to choose from with your choice of sushi rice (nigiri) or no rice (sashimi). Keep in mind that all of the fish are lightly brushed with different sauces that greatly, but subtly enhance their flavor, so soy sauce is not necessary or recommended. It is available if requested, but you shouldn’t.
While I am not recommending adding soy sauce, it is important to note that many dishes here are served with wasabi, but this is not the wasabi you love to blow out your sinuses and tastes buds with. Most “wasabi” served in restaurants is actually a mixture of horseradish, mustard, and food coloring.
Real wasabi is much more expensive. It looks like a root, but technically it is a rhizome, which is an underground stem of the Wasabia japonica plant. Freshly grated real wasabi has a delicate, sweet, and quickly fading pungency, unlike the harsh, lingering burn of imitation paste. So, it’s more mild and more appropriate to use with high quality fresh seafood without overtaking the wonderful flavors. I still didn’t use it though.
We had 10 of the 12 items from this section with the Hokkaido scallop done both ways. For our first sashimi platter, we let the chef choose for us and we had the Chutoro, Otoro, Gulf Snapper, Hamachi, Bluefin, and King Salmon. This is sashimi done at the highest level. It’s all bursting with flavor and melts in your mouth.

Our second sashimi platter included Salmon Belly, Hokkaido Scallop, and Kampachi. Be sure to get the Hokkaido scallop. It is not only luscious and creamy, but also hard to find in this area. The only place I’ve seen it served in St. Pete is at IL Ritorno. It is good as nigiri, but I recommend the sashimi over it.


Hokkaido is Japan’s northernmost main island with mountains and snow, and just 27 miles across the La Pérouse Strait to Russia. Hokkaido scallops are considered to be some of the best in the world along with another delicacy from the same place – Uni.
Hokkaido uni is prized for its exceptional sweetness and buttery texture, melting effortlessly on the palate. It is widely regarded as the finest in the world, and I agree. Uni also comes from Santa Barbara and Maine, but I recognized that this was from Hokkaido right away, and it was confirmed later. It had to be checked since Isu also sources uni from California when they can’t get Japanese.
In the photo below, look closely at the rice. It is a great example of perfectly prepared sushi rice – individual, tender grains that are shiny, slightly sticky to the touch, with a slightly firm texture – not mushy.

Our last raw seafood item was the Japanese Madai. It is mild, clean, and slightly sweet with a firm, fine-grained texture and a delicate, almost buttery finish.

The A5 Wagyu Nigiri was unfortunately a little over-torched, which made it the only disappointment aside from the two dishes that were changed not to our liking.

HOT
We had three of the five items from the Hot section of the menu. The Black Cod was silky and buttery with sweet-heat miso and bright, tanginess from the salsa criolla. The Wagyu Ribeye was rich, marbled beef with deep umami, subtle chili warmth, and a slight vinegary pop from the pickled escabeche. The Crispy Rock Shrimp were light and crunchy. The aji verde dipping sauce added a creamy, herbaceous kick.



DESSERT
The Lychee Panna Cotta is magnificent, and the Ube Cheesecake is sublime.


DRINKS
I loved the Kira Kira Sparkling Sake, Matcha Kanji, and Sakura Blossom.






All things considered, Isu delivers an experience that is both thoughtful and ambitious—one that successfully bridges cultures without losing authenticity or precision. The few missteps we encountered were minor in the context of an otherwise exceptional menu, and even those dishes still showed strong technique and quality ingredients.
What sets Isu apart is not just the freshness of the fish or the creativity of the dishes, but the clear intention behind every plate. There is a deep respect for tradition paired with a willingness to evolve, which is exactly what makes the fusion, izakaya, and nikkei elements feel cohesive rather than forced.
In a city that continues to elevate its culinary scene, Isu stands firmly at the top tier. Whether you’re there for pristine sashimi, inventive rolls, or bold Nikkei flavors, it offers something you simply won’t find anywhere else locally.
We’ll absolutely be back—and next time, we’ll probably order just as much.
Exquisite Nikkei, Peruvian, Japanese, and Sushi
PLEASE NOTE: Reviews reflect a certain moment in time. Some restaurants stay extremely consistent over many years, and some change for the better or worse. Some things that may change are: chefs, recipes, food suppliers, ingredients, philosophies, ownership, etc. We always hope that you have the same good, or great experience we had.


















