Yonsei
About This Spot
Stepping into Yonsei in Thornton feels like entering a quietly vibrant corner where the art of sushi is thoughtfully celebrated. The atmosphere strikes a comfortable balance — lively enough to feel spontaneous yet calm enough to settle into without rush. Warm lighting and a casual, approachable layout invite both the solo diner and groups to connect over thoughtful flavors and engaging moments.
At the heart of Yonsei is a sushi bar that encourages a gentle exchange between chef and guest, making the experience as much about watching skilled hands craft each bite as savoring it. The pace here respects the freshness and care poured into every dish — from delicate sashimi selections to inventive rolls that offer surprising textures and layers of flavor. There’s a welcoming rhythm to the meal, whether you’re sharing small bites like crispy gyoza or grounding yourself with a hearty bento box crafted with attention and warmth.
Beyond the sushi, Yonsei offers subtle nods to a broader culinary narrative — hints of spice, umami-rich broths, and satisfying grilled specialties blend effortlessly to round out the menu. This is a neighborhood spot where local regulars gather, appreciating the consistent quality and genuine hospitality that make each visit feel personal, not programmed.
The service flows naturally, with staff who know the menu intimately and are happy to guide curious palates toward new favorites or comforting classics. It’s a place where you can quietly observe your surroundings, enjoy the hum of friendly chatter, and feel seen — whether you’re slipping in for a quick lunch or lingering over dinner.
Yonsei resonates as a thoughtful retreat from the expected, where freshness and craftsmanship set the tone, and the simple joy of sharing good food anchors every visit.
What’s Available Here
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Kerbside pickup
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Delivery
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Takeaway
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Dine-in
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Fast service
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Lunch
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Dinner
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Solo dining
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Wheelchair-accessible car park
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Wheelchair-accessible entrance
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Wheelchair-accessible seating
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Wheelchair-accessible toilet
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Alcohol
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Beer
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Comfort food
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Happy-hour drinks
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Happy-hour food
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Healthy options
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Small plates
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Spirits
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Vegan options
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Vegetarian options
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Wine
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Lunch
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Dinner
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Catering
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Dessert
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Seating
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Table service
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Bar on site
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Toilet
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Casual
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Cosy
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Trendy
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Family friendly
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Groups
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LGBTQ+ friendly
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Tourists
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Transgender safe space
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Accepts reservations
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Credit cards
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Debit cards
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NFC mobile payments
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Credit cards
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High chairs
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Free of charge street parking
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Free parking lot
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Parking
Location & Hours
| Monday | 11:00 AM - 09:00 PM | |
|---|---|---|
| Tuesday | 11:00 AM - 09:00 PM | |
| Wednesday | 11:00 AM - 09:00 PM | |
| Thursday | 11:00 AM - 09:00 PM | |
| Friday | 11:00 AM - 10:00 PM | |
| Saturday | 11:00 AM - 10:00 PM | |
| Sunday | Closed |
Stephen Taylor 01 Jan 2026
Wow! I dont have enough good things to say about this place. The atmosphere was incredible, they had a bar that you could sit at while they made the sushi. They also had lunch specials. I ordered one of the 4 options they had. It was so good, its such high quality. The menu is amazing and simple. The food is so fresh and was being prepared right in front of us. Our server was also so nice and did such a great job in explaining the menu and taking care of us!
Mikej Joos 30 Nov 2025
We eat here regularly. A must if your in the north metro area. The fish is always extremely fresh, they have a nice variety of menu items, and the staff that runs Yonsei is amazing. I highly recommend giving it a try.
Angelina Gos 05 Nov 2025
Best sushi ever We always come here, and we’re always warmly welcomed — both us and our baby The sushi is always the most delicious, fast, and incredibly tasty. We always recommend this place to everyone and always come back again.
B Barnes 07 Oct 2025
Cute little sushi spot in Thornton - I stopped in around 9pm one night when I was craving sushi and sat at the bar. I had their yellowtail and jalapeño and a sushi roll and they were both great. My server was super cool and gave me some otger great recommendations that I tried - mackerel and then a little individual role with Yellowtail, jalapeño and mango. I really liked both of them had never tried a fish cured the way the mackerel was. Will have to stop in again soon!
Leo Vaaj 05 Oct 2025
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.
Amanda Heaston 03 Oct 2025
Went with some friends for lunch, had heard great things and it did NOT disappoint! By far the freshest sushi we have had in Colorado! Don’t miss the gyoza (made in house every day!). Also the crispy rice spicy tuna was the best I’ve had anywhere. This place is small and in a strip mall so if you’re going with more than 2 people, call ahead or make a reservation!
Courtney Law 26 Sep 2025
Yonsei is hands down the best sushi restaurant in Colorado. And we’ve tried everywhere. Fresh fish, exceptional service, intimate setting, and our favorite place for lunch or dinner. Regardless of the trendy places in Denver, this will always be our first choice. And who would’ve thought? Specially being nestled in the suburbs. If you’re contemplating on where to go, this is your sign to give this place a shot.