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✔️Breakfast ✔️Brunch ✔️Lunch ✔️Dinner ✔️Dine in ✔️Take out ✔️Delivery
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Hours
| Friday | 11:30 AM–12 AM |
| Saturday | 11:30 AM–12 AM |
| Sunday | 11:30 AM–11 PM |
| Monday | 11:30 AM–11 PM |
| Tuesday | 11:30 AM–11 PM |
| Wednesday | 11:30 AM–11 PM |
| Thursday | 11:30 AM–11 PM |
Address and Contact Information
Address: 141 E Commonwealth Ave, Fullerton, CA 92832
Phone: (714) 447-9926
Website: http://kopanramen.com/
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Home | Kopan Ramen
… Sushi & Ramen. Kopan – Fullerton, Burbank, Rowland Heights, Encino, Alhambra, Glendale,. Northridge, Garden Grove, Whittier, Beverly Grove, West Covina …
Reviews
Michelle Derak
Wow. I’m not a huge Ramen person, but this place changed my mind!
Not only was it delicious and fresh but I was able to add a number of items to my ramen to personalize it. They had garlic and crunchy garlic and many others that made it the way I like it.
The service was top notch and after every customer left the tables were cleaned thoroughly.
I appreciated this!
I highly recommend this place.
… moreNot only was it delicious and fresh but I was able to add a number of items to my ramen to personalize it. They had garlic and crunchy garlic and many others that made it the way I like it.
The service was top notch and after every customer left the tables were cleaned thoroughly.
I appreciated this!
I highly recommend this place.
Tech Girl
If seated in the patio area, customers tend to be forgotten. Need to go over to the main restaurant to grab someone to take our orders.
Other than that, food was good. Price is medium to high due to cuisine.
… moreOther than that, food was good. Price is medium to high due to cuisine.
Knicole
Delicious sushi with an extensive menu in the heart of Downtown Fullerton! The ambience was creative and casual. Right in the middle of all the shops and bars. The food was flavorful and the prices were fair, they had some good deals like buy a roll get one half off, buy one hot sake and get a second for .99cents. Its a lowkey local spot but feels like you’re somewhere in Japan. So much to choose from menu wise, cold food, hot food…Yumminess for days!
… moreJocelyn Zhu
Recently, I’ve been loving this hidden gem of a restaurant! I really enjoy the cozy Japanese ambiance—it’s very comfortable. The staff is incredibly friendly and gave us great recommendations that turned out to be delightful surprises. I especially love the tonkotsu ramen; the broth is rich and flavorful, and even the kids enjoyed it. We also ordered the Ginza sushi—the sashimi was incredibly fresh, and the presentation was beautifully done. This is definitely a place I’ll keep coming back to!
… moreVictor Terrones
Kopan Sushi and Ramen can’t do no wrong. I’ve been coming here for the last 8 years and they have been adding amazing good along the way. They now have adding so many new items that you’ll have a little bit of everything. The ambiance and decor is excellent, it makes you feel like you are in Japan. The service is great and fast.
… moreRey Chou
This spot in Fullerton is super close to CSUF, and honestly feels like a second cafeteria for students. The prices are super budget-friendly, the menu has a ton of options, and the flavor is consistently good. The vibe is very much like a retro-style Japanese izakaya.
Came here with some friends and ordered a table full of shareable dishes—everything was solid:
Bento Box
You can choose two or three mains—I got takoyaki, Korean beef, and teriyaki chicken. It comes with rice, miso soup, and salad. Generous portions! The chicken was tender and flavorful, beef on the sweeter side but not too much, and the takoyaki had bonito flakes which added a great touch.
Negitoro Rice Bowl + Uni
This was super Japanese in style. The toro was finely chopped and creamy, mixed with green onions and uni. Best eaten wrapped in nori—rich, fresh, and melt-in-your-mouth.
Tokyo Roll
Spicy tuna and cucumber inside, topped with spicy albacore, avocado, and crispy onions. The sauce is a mix of spicy yuzu ponzu, eel sauce, and spicy mayo. Flavor-packed but well-balanced.
Baked Scallop California Roll
A classic California roll base topped with baked scallops, slightly charred, with mentaiko sauce and eel sauce. Hot, savory, and comforting.
Grilled King Crab Bites
Crunchy base with a heap of crab meat on top—clean flavor and great for sharing.
Salmon Tartare
Finely chopped salmon mixed with sauce, served with crackers. Refreshing and a nice appetizer.
Spicy Lemon Grilled Octopus
Crispy skin, super tender octopus, and a tangy spicy sauce that really stands out.
… moreCame here with some friends and ordered a table full of shareable dishes—everything was solid:
Bento Box
You can choose two or three mains—I got takoyaki, Korean beef, and teriyaki chicken. It comes with rice, miso soup, and salad. Generous portions! The chicken was tender and flavorful, beef on the sweeter side but not too much, and the takoyaki had bonito flakes which added a great touch.
Negitoro Rice Bowl + Uni
This was super Japanese in style. The toro was finely chopped and creamy, mixed with green onions and uni. Best eaten wrapped in nori—rich, fresh, and melt-in-your-mouth.
Tokyo Roll
Spicy tuna and cucumber inside, topped with spicy albacore, avocado, and crispy onions. The sauce is a mix of spicy yuzu ponzu, eel sauce, and spicy mayo. Flavor-packed but well-balanced.
Baked Scallop California Roll
A classic California roll base topped with baked scallops, slightly charred, with mentaiko sauce and eel sauce. Hot, savory, and comforting.
Grilled King Crab Bites
Crunchy base with a heap of crab meat on top—clean flavor and great for sharing.
Salmon Tartare
Finely chopped salmon mixed with sauce, served with crackers. Refreshing and a nice appetizer.
Spicy Lemon Grilled Octopus
Crispy skin, super tender octopus, and a tangy spicy sauce that really stands out.
James Vasquez
I just moved here and wanted to enjoy a nice hot bowl of ramen on the 1st rainy day in fall. I entered dripping and waited 3-4 minutes next to a sign that said wait to be seated. 3 out of 12 tables were occupied and eating but I eventually went to a sushi chef to check in. They said find a seat.
At a table, I eventually was greeted, handed a menu and ordered crispy rice, their signature bowl of ramen and a beer and asked it all come out together. A water was followed with the beer which was fine but then immediately served my bowl of ramen. Hungry, I dug in hoping for the crispy rice to follow as that is what I wanted to eat first.
The ramen looked nice but it tasted soulless and commercial. I tried took push past the cold ingredients but again, I was hungry so that was easy to do (the broth warm, not hot.) Half way through my bowl I asked about the crispy rice and it was brought to me after. It was decent for what it was.
Overall, I get it. I was 20 once not carrying about my job and how I performed but food service comes with the territory that people come in to be comforted with some nice service and good food. Neither was had here. I was served my receipt with a small apology and left.
I do plan on coming back as I get recommendations from people and maybe I ordered the wrong things. But, if this is how a slow time was then I’m not too confident on how a dinner service will turn out.
… moreAt a table, I eventually was greeted, handed a menu and ordered crispy rice, their signature bowl of ramen and a beer and asked it all come out together. A water was followed with the beer which was fine but then immediately served my bowl of ramen. Hungry, I dug in hoping for the crispy rice to follow as that is what I wanted to eat first.
The ramen looked nice but it tasted soulless and commercial. I tried took push past the cold ingredients but again, I was hungry so that was easy to do (the broth warm, not hot.) Half way through my bowl I asked about the crispy rice and it was brought to me after. It was decent for what it was.
Overall, I get it. I was 20 once not carrying about my job and how I performed but food service comes with the territory that people come in to be comforted with some nice service and good food. Neither was had here. I was served my receipt with a small apology and left.
I do plan on coming back as I get recommendations from people and maybe I ordered the wrong things. But, if this is how a slow time was then I’m not too confident on how a dinner service will turn out.
Nick Clicks
We’ve been going to Kopan for the longest time. The broth of their ramen is the best… in my honest opinion! We’ve tried other ramen places and we still find ourselves coming and ordering here at Kopan. We’re lucky that they have several branches and when we know we’re close to one, we’re there.
… morePaprika Meow
Taste :4.5/5
Environment: 4.5/5
Service：4.5/5
Even though it’s called a ramen shop, Kopan Sushi & Ramen honestly feels more like a cozy Japanese izakaya that’s been hiding in plain sight. The whole place has serious izakaya vibes — warm lighting, casual energy, and the kind of menu that makes you want to hang out all night.
Bonus points: they even have a “buy a bottle, get one free” deal, which feels like a love letter to all the hardworking people who just need a drink (or two) after a long day.
Some recommendations
Sesame Chicken – crispy, savory, and ridiculously addictive.
King Crab Bites
Chili Lime Tako – tender octopus with just the right kick.
Yuzu Miso Black Snapper Crudo
bright, refreshing, and full of flavor.
toro Donburi fresh salmon over rice with a citrusy pop.
Hotate Crudo – Scallop with Caviar– rich, delicate, and basically impossible to resist.
Ginza sushi platter is the showstopper here — colorful, eye-catching
… moreEnvironment: 4.5/5
Service：4.5/5
Even though it’s called a ramen shop, Kopan Sushi & Ramen honestly feels more like a cozy Japanese izakaya that’s been hiding in plain sight. The whole place has serious izakaya vibes — warm lighting, casual energy, and the kind of menu that makes you want to hang out all night.
Bonus points: they even have a “buy a bottle, get one free” deal, which feels like a love letter to all the hardworking people who just need a drink (or two) after a long day.
Some recommendations
Sesame Chicken – crispy, savory, and ridiculously addictive.
King Crab Bites
Chili Lime Tako – tender octopus with just the right kick.
Yuzu Miso Black Snapper Crudo
bright, refreshing, and full of flavor.
toro Donburi fresh salmon over rice with a citrusy pop.
Hotate Crudo – Scallop with Caviar– rich, delicate, and basically impossible to resist.
Ginza sushi platter is the showstopper here — colorful, eye-catching
Marina Minjares
The spicy garlic edamame is so good and the rolls are amazing. The Ramen was delicious too. Over all the atmosphere was chill and it wasn’t too busy when we got here. I’m sad that I don’t live closer because I would be here all the time. This is some of the best sushi I’ve had in a long time.
… more