We tried the Black Samurai roll, edamame, spicy cucumbers, and yellowtail nigiri and every single dish delivered. Everything tasted fresh, flavorful, and really satisfying. The place was packed when we arrived but we were seated in about 10 minutes. Service was fast and friendly the whole time, even with the crowd. The interior is clean and modern, with a sushi bar for seating along with a few tables. It is a smaller space so it fills up quickly and reservations are definitely a good idea, especially on weekends. Overall it is a great spot and I am already looking forward to coming back. read more

Yonsei - Black Samurai roll & yellowtail nigiri - Sushi Bars Near Me - Thornton, Colorado

My first recommendation: make a reservation if you're going on a Saturday night like I did! There was a bit of a wait--totally understandable given the cozy space and our unintentional lack of planning--but it was absolutely worth it. We were called about 5 minutes into our estimated 30-minute wait and ended up seated at the bar. That's not usually my first choice, but it turned out to be a great spot. Everything is so organized, and I loved having a front-row seat to watch how thoughtfully (and deliciously) all the ingredients were arranged and served. I'll be happy to return, and I'll absolutely be recommending this unexpected gem to others. Thank you, Yonsei, for a wonderful evening and such an enjoyable experience. I left smiling--and from the happy chatter around me, it sounded like plenty of others did too. read more

High quality fish and great portions. I wish there were more rolls that didn't have either cream cheese or fried asparagus, there weren't many fresh roll options. The sashimi and nigiri were great. The piece of fish on the nigiri is easily double maybe even triple the size of a typical sushi place. The size of the restaurant made us feel rushed though. We ate fairly quickly and wanted to chat for a moment but the hostess was yelling that they needed a table for two and when I looked around all the tables were taken so we left. If they had more fresh roll options and we didn't feel as rushed this would get 5 stars. read more

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Everything was surprisingly good for being in Denver, well Thornton in this case. The only thing I thought could've been better was the miso soup. It had umami but needed a little salt or soy sauce. Service was good and quick. The decor and atmosphere was on point. The chef even let me video him cutting up a tuna. The overall experience was pleasant. Definitely recommended. read more

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Yonsei is a new personal favorite of mines and I'm so happy that it's like 8 minutes away from us. This might be the best place for sushi in Colorado (even better than some places in Cali). Prices are reasonable and the fish tastes fresh. You do not need to pay an arm and a leg for sushi in Colorado. If you're from Denver, this is worth a drive. This is truly a hole in the wall. First off, I love the whole samurai theme from the decor to the name of the rolls. Second, the staff is fantastic. They're so sweet and attentive. The sushi was fantastic. Each roll felt like butter and melted in your mouth. The unagi was so delicious. The toro was well done. We ordered the ronin and black samurai and they were so tasty. The salmon and hamachi tasted really well together. Truly a sushi wizard. Even something as simple as the spicy tuna roll was phenomenal. The mussels were drool worthy with enough cheese and spices. I'm not a big seafood fan so I love it when I can't taste the sea. My partner and I plan to try as much of the menu as possible. This is our go to place for sushi in CO. read more

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Wanted to check out the Sushi scene in Thornton, I was impressed with the 4.9 Yelp rating after 80 reviews. First off, if I could give 3.5 stars that would be my preference but unfortunately Yelp does not allow half star increments. The restaurant itself is fine, the staff are friendly, the interiors is very clean and relaxing, and the prices are solid. Why the 3 star rating then? My wife ordered the chirashi bowl and I went with a variety of nigiri orders. The slices of fish were very generous so thumbs up there. The quality though was where I had to knock it down a bit. The fish itself was not premium sushi grade in my opinion. The uni wasn't high grade or really fresh. The tail section of the ama ebi was..shrimpy in flavor. Premium sweet shrimp should be briny and sweet, not shrimpy in taste. The heads though were fried perfectly. The Nice drink menu and we found a great sake to share. The Unagi Eel was good, and the scallop mayo was nice. Overall it was okay, the prices were great, the portions were generous, and maybe we will try cooked dishes next time. I do want to support them and try again. read more

Yonsei - Chirashi Plate with Karatamba sake - Sushi Bars Near Me - Thornton, Colorado

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First time trying this out and it didn't disappoint. Small cozy place, the food and service is great.

20260207 table two around 7pm While living in Japan for 3 years and then moving back to the states I've been trying to find a place and that fresh sushi and tasted amazing. And this right here was by far the best sushi spot I had in a while. The food was amazing the staff were friendly. My only criticism would be having booster seats and a kids menu. That is all. I will be coming back here. PSA have a reservation this place gets packed read more

Yonsei - Sushi Bars Near Me - Thornton, Colorado

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Cannot recommend this place enough! The chill island music and upstanding customer service create a perfect date night stop. Never have we received even an "ok" roll, every sushi roll is perfection. Highly recommend the cucumber and spicy garlic edamame appetizers. I always order the bacon kimchi fried rice (spicy) and have enough leftover for breakfast in the morning. They even let me decorate once for my husband's birthday. The staff is always the same, no high turnover rate here and they are very accommodating and welcoming. This has to be in my top 3 restaurants in the Denver metro area. Worth every penny. read more

I would not eat here if you want high quality Japanese food Disappointing and expensive read more

I was impressed. The sashimi was especially fantastic! All of the rolls were good. This place and Hana Matsuri are my two favorite places to get sushi in the area. The place itself is small, I like the decorations and overall vibe. It's kind of hipster, with the decor, reggae music and cost. You can tell the people who work there care about your experience. The food came out well spread out, so you continuously eat. Our waitress was nice and always had a smile. I will be back & I definitely recommend you try it. Happy eating!! read more

Yonsei - Rolls!! - Sushi Bars Near Me - Thornton, Colorado

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WAY overpriced & barely any food. Apparently their Bento Boxes "used" to be $14 & are now $18-$20. I still decided to give them a shot. Food was mediocre if anything. Shrimp tempura & miso soup were not that great at all. Didn't even eat the soup it was so bad. I give this place a HARD PASS. read more

Yonsei - $24 Hannya Bento Box w/ sm side of crab. - Sushi Bars Near Me - Thornton, Colorado

The food quality was superb. And the portions were substantial and exceeded the value for the money. The service was fantastic. Everyone was very attentive and our food arrived in a timely manner. This place is small, but clean, comfortable, and not loud, even when full. We will definitely go back! read more

Yonsei - Hand Nippon Roll, hand Yonsei Roll, Uni, Tobiko, Unagi, various rolls. - Sushi Bars Near Me - Thornton, Colorado

Omg everything was delicious the chu-toro was melt in your mouth. All the rolls had so much fish in them and also the fish was the freshest I've ever had in colorado and maybe even east coast? Service was friendly and non invasive. And the atmosphere was great i think they partnered with an artist: tokyo hiro? For their logos and storefront design. All in all best sushi in colorado hands down. read more

Yonsei - Spicy Octopus Sushi Roll Salmon roll Hamachi scallion roll Samurai roll Chutoro nigiri - Sushi Bars Near Me - Thornton, Colorado

The food is excellent! Good service. Ambiance is okay. If you are in the mood for sushi, this is the place to go!

Hands down the best sushi I've had in Colorado. I was craving sushi and tempura while out running errands, so I turned to Yelp. Luckily, Yonsei was less than 5 minutes away, so we thought we'd check it out. So glad we did! Let's start with the sushi - wow! The salmon and tuna were amazing, the specialty rolls had ingredients that complimented each other perfectly (and it didn't feel like these rolls were packed with stuff just because), and each roll had just the right amount of rice. All the rolls were good, but I particularly liked the salmon avocado roll and the Shogun roll. I also appreciated that there we lunch specials on Saturday. I went with the Huli Huli Chicken Bento. The bento box had so much for the price. The shrimp and vegetable tempura was light and crunchy (not overly breaded, which was fantastic, the chicken was super tasty, and the soup/salad rounded off the meal perfectly (bonus points for the 4 pieces of California roll too). Everything was so good and appropriately priced, the staff were so friendly and helpful, and the vibes were good. So excited to come back and try out more! read more

Yonsei - Huli Huli Chicken Bento Lunch Special - Sushi Bars Near Me - Thornton, Colorado

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Early Saturday evening!! Open seating. Delicious and plump Gyoza!! The two rolls we got were excellent!! Rising Sun is just a little sweet and soo yummy!! Yokozuna has fresh slices of jalapeños- a great zing of heat!! Also had the Miso Cod - wonderful!! The Miso Cod had a buttery texture!! Excellent!! Great and speedy service! read more

Yonsei - Top - Rising Sun Roll Bottom - Yokozuna Sushi Roll - Sushi Bars Near Me - Thornton, Colorado

Was on the hunt for good sushi and came across Yonsei and their good reviews. We decided to give them a try to see if they might become our new go-to sushi spot. We were impressed. First thing I noticed was that the menu wasn't super extensive, but was hoping that was because the fish was all fresh. We ordered several rolls (red samarai, Ozeki, and shrimp tempura with cucumber added), miso soup, and the bacon fried rice. The rolls were very good and the fish all tasted fresh (not watery from being previously frozen). I personally liked the Red Samarai the best. The thin-sliced jalapeños on top added a nice crunch and contrast of flavor. The miso was very good too. I thought the bacon rice was good, but I don't think I'd order it again. The bacon was thick and smoky and there were a few rinds that were a bit too tough to eat. It's definitely a nice side to the meal though. The place is fairly small, but it was busy when we were there and everyone seemed to be enjoying themselves. The staff was very friendly. The woman behind the counter expoing was ontop of her stuff. They were in the weeds, but she never seemed flustered and kept a good demeanor for the guests sitting right in front at the sushi bar. That impressed me. She also labeled everything so nice on the packaging which I really appreciate. It's nice not having to figure out which roll is which. The special rolls are slightly more $ than average, but I'll pay an extra $5 or so to get good quality fish. I like their add-on options, but if I had a recommendation - can you offer spicy mayo as a side? We'll definitely be back and it's a small business I highly recommend trying out. read more

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Sushi is great! Best in Thornton! Staff is very friendly and helpful! The place is a little small so reservations are encouraged. You won't be disappointed! read more

The Huli Huli chicken was delicious. Sweet and savory but not sticky as a sauce like teriyaki. Tender and chopped into strips, I enjoyed it for dinner with a side of rice and iced green tea. Pick-up was quick and easy! Thank you to Yonse'si team for their friendly service and delicious food. read more

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This place is fire! Eat here often, cannot get enough. Rolls are big, fresh and creative

Wow! Everything here was delicious! The sushi is super fresh, high quality and beautifully presented. Highly recommend. read more

Really good sushi and kimchi fried rice. My companion enjoyed her udon. The staff was friendly and I enjoyed watching the chefs roll sushi at the bar. Would definitely return! read more

Some of the best sushi in the state. Great people, excellent quality, and a great time. It was good enough that we got a T Shirt to rep the company read more

The sushi was great. We happened to hit a happy hour Friday for an early dinner. We will definitely be back. read more

Yonsei - Sushi Bars Near Me - Thornton, Colorado

Wow, very impressed with this place!! It's so close to our house too which is a huge plus. The bacon fried rice is perfection. We'll be grabbing to go orders of this in the future to have at home. We tried a bunch of sushi rolls, which were all good! We would probably not get the spider roll again, because it doesn't even compare to the spider roll we get at our usual sushi place. But the Black Samurai, Ninja, and Shogun were our favorites, and we'll absolutely be back for those again (as well as trying more I'm sure)! Ozeki looks like a good one to try next time. Service was perfect too, and food came out fast during our late lunch date. It's smaller inside, so I do wonder if they fill up fast for dinner. read more

Yonsei - Bacon Fried Rice - Sushi Bars Near Me - Thornton, Colorado

The picture is bad, the sushi is AMAZING! Good sushi is hard to find in a land locked state but this was delicious!! read more

Yonsei - Sushi Bars Near Me - Thornton, Colorado

We had a wonderful dinner tonight at Yonsei. We sat at the sushi bar and chef Jessie was fast, friendly and the rolls were terrific. Highly recommend and happy to have great sushi so close to home! read more

I loved every plate so far, the geisha roll was the bomb every Time we've asked for Something not on the menu they still make it. And it's been a great choice each new thing of theirs I try. read more

Yonsei - Sushi Bars Near Me - Thornton, Colorado

This was a nice surprise. The thickest freshest Salmon Sashimi! I was so impressed with the friendliness and quick walk in service. Was packed yet we had a very quiet dinner catching up with old friends. read more

Yonsei - Salmon Sashimi - Sushi Bars Near Me - Thornton, Colorado

Outside was iffy but once inside nice and clean and pretty cute and the waitress and cooks were very helpful in ordering and they were so nice customizing my order. I wish I would have got a picture of our order but it looked so yummy! read more

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As soon as we walked in, there was water on the table. The waitress asked us about drinks about two minutes after we sat down, and I ordered sake. The service was exceptional. Our food tasted fresh, and everything was delicious. I'm from Florida, and I've been having a hard time finding good sushi, but this is definitely one of those places. The restaurant is small, so I would recommend not coming on the weekends. The service was outstanding, and we didn't even have to call our waitress over because she was so attentive. Great place read more

Yonsei - Sushi Bars Near Me - Thornton, Colorado

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Small but very impressive! Opened since 4/1 and it's pretty yummy! Happy Hour selection was awesome! Service is also pretty awesome! I have nothing bad to say about this place. AWESOME JOB YONSEI CREW! read more

Yonsei - Ordered from the happy hour menu! Freaking AWESOME! They are cooking something and it smells amazing. Found my new sushi spot! - Sushi Bars Near Me - Thornton, Colorado

Wow, just wow. WHAT a gem. Look beyond strip-mall... this is some of the BEST sushi we've had in quite a while. Amazing selection, very attentive staff (you can't teach hustle and friendliness), and an amazing experience. read more

Loved the food, service is friendly and accommodating, clean restaurant. Have been twice and will be back

First off this place is so unexpected in a little strip mall. The atmosphere inside is lovely. The food was delicious and came out quickly. I would def recommend this place. read more

Yonsei - 2 rolls, handmade gyoza - Sushi Bars Near Me - Thornton, Colorado

The food is amazing Staff is efficient and friendly Recommend to RSVP on the weekends, we came in on a Thursday when it was kinda slow n came again on Friday n it was packed but we still were able to get a table for 3. Pricing is fair read more

So excited to finally have a quality sushi place so close! The sushi is always really fresh and delicious, lots of variety and great starters too. The spicy garlic edamame is life changing! Never had an encounter where staff wasn't super friendly, helpful and welcoming, it's always just a really great experience. Definitely check them out! read more

Staff/Owners were very friendly and accommodating. Sushi was top notch, so yummy.! Would definitely go back for nigiri and shashimi. read more

Freshest fish I've ever had! Best sushi I've ever had, great place! people here are very nice! definitely my favorite place to have sashimi!