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I've been to the kosuke in Alhambra many times and was surprised to see one in Ontario. The ramen quality is the same, such rich and not too overwhelmingly heavy broth. The noodle is cooked to a nice slightly al dente texture. My favorite is the veggie ramen and spicy miso. Both are uniquely delicious! We stopped by on a saturday afternoon at around 2 and were seated right away. Service was good and food came out quickly. Parking: located inside a plaza with plenty of parking.
This place was okay. Wouldn't be my top choice. Pricey for just okay Ramen. Ordered spicy Ramen and it can be improved. Tasted like powder chili if I'm being honest. First and last time. Side options tasted like they were frozen and not handmade. Plenty of parking. Bathrooms clean.
Feb 2026 review Came in on a Saturday at noon. It was completely empty! I stood at the register to be seated for about 5 mins. I called out several times and finally a server came out and sat me. He had his AirPods in so that's probably why he didn't hear me. I asked if they had Tsukemen style and he said yes. He dropped off a menu (seemed very annoyed) and I ordered. I went to order the Tsukemen and he said they don't have it. WTF!? I just asked before I sat down! So, quick pivot and I ordered the tonkotsu ramen. The chef delivered some chicken karage and my soup. Chef was super friendly. The chicken was fine. Nothing special. I noticed my ramen didn't have any pork chashu in it (menu pic shows meat!). And the ramen came with 1/2 and egg, green onions and a sliver of black mushrooms. The soup itself was bland. I'm used to the thick creamy tonkotsu broth. This one wasn't good! Ramen noodles on the thinner side and no chewiness to it. $20 later and I was outta there! Never coming back.
This place is starting to become my go to for simple and trustworthy Japanese food. It's a very spacious place with quick service. My coworkers and I like to come here during lunch time because of how quick the service is and how high quality the food is. The highlight of the menu is definitely the chicken katsu curry. You just can't go wrong with it. The chicken is perfectly crispy, doused with flavorful umami curry and over a bed of rice. The spicy tonkotsu ramen is also pretty good but not life changing. The portions are also pretty big! I tend to pack up what I can for my next meal and I always look forward to it.
First time trying this place and it did not disappoint! A lot of seating for small or large groups. Flavor was great. I didn't have to add anything as it was already perfect. Service was on point. Will definitely be coming back.
Loved it here the Spicy Ramen with pork was so good and there takoyaki is good too! Everyone here was really nice and got our food out to us fast. Overall really nice place to relax and have a good bowl of ramen. Note: My fiance recommends the spicy miso ramen and honey green tea!
I arrived with a reservation to find they don't accept them - suggested Yelp edit already submitted. The service was terrible. Maybe they were short staffed because everything we ordered took much longer than it should have. Our appetizer (edamame) arrived after our ramen was delivered. Our entire experience was us waiting for items to be delivered. The men's bathroom door had graffiti on it, including a p3nis. Yes the ramen was good in the moment but it definitely messed up my stomach that I didn't trust to eat the left overs.
Came here after a long day of shopping at Ontario Mills and was craving something warm. There were plenty of seats when we arrived; however, it got packed around 7PM. Ordered Tonkotsu Ramen, Spicy Miso Ramen, and Chicken Karaage. I really loved how they provided a generous amount of meat and side ingredients such as eggs, seaweed, wood ear mushrooms, ginger, and green onions. Other places would've charged extra, so honestly, it was quite affordable for what you get. The meat was a bit tough and dry. Both dishes were rich in flavor, but I wouldn't say it was the best I've ever tasted. The Chicken Karaage was delicious. They were very generous with the portion size, and though the batter was a bit on the thicker side, it was crispy, hot, and evenly coated. Overall, I thought this place was a great option for comfort food. The interior could've been a bit more updated and cleaner. The cut of the meat could've been more consistent to prevent dryness. Minor issues in my opinion but still affordable and comforting. Great for large parties. Parking was easy. Staff was quick and nice.
Came here for dinner, which had a convenient location right next to the Ontario Mills, and there was no wait, though the inside area is small. I had the Tonkotsu ramen, and also split the chicken karaage and had a bit of the miso ramen as well. The tonkotsu is not bad, I like that there were four slice of meat, more than many other ramen places. I didnt like that the slab of ginger in there changing the flavor of the soup, or that the half egg's yolk was a bit overdone, but the flavor of the soup and the ramen noodles, and the pork is not bad. Same with the miso soup pork, and I liked how there was a lot of green onions in that one. I also liked how many pieces of chicken were in the chicken karaage. The batter was a bit thick and I wish this one was the one with a bit more ginger flavor, but otherwise not bad. Service is good and prices are decent.
We decided to eat here because our first option has a longer wait. On Sunday 1pm there's no wait at all. Just three tables right now and we were served immediately. We ordered the chicken cutlet curry and kuro ramen. I noticed the flyer for free ice cream if you tag and like this place in IG but I decided not to do. The ramen taste ok and the chicken cutlet curry is good. I think the chicken cutlet was freshly fried which is good. The ramen soup base doesn't have much of flavor. Service is very good. I'll give this experience 3.8
Food was delicious. Hit the spot on a rainy day! Got the popcorn chicken miso ramen spicy (medium) had a god kick to it.
2 months ago
2 months ago
I've been to the kosuke in Alhambra many times and was surprised to see one in Ontario. The ramen quality is the same, such rich and not too overwhelmingly heavy broth. The noodle is cooked to a nice slightly al dente texture. My favorite is the veggie ramen and spicy miso. Both are uniquely delicious! We stopped by on a saturday afternoon at around 2 and were seated right away. Service was good and food came out quickly. Parking: located inside a plaza with plenty of parking. read more
13 days ago
This place was okay. Wouldn't be my top choice. Pricey for just okay Ramen. Ordered spicy Ramen and it can be improved. Tasted like powder chili if I'm being honest. First and last time. Side options tasted like they were frozen and not handmade. Plenty of parking. Bathrooms clean. read more
8 months ago
Feb 2026 review Came in on a Saturday at noon. It was completely empty! I stood at the register to be seated for about 5 mins. I called out several times and finally a server came out and sat me. He had his AirPods in so that's probably why he didn't hear me. I asked if they had Tsukemen style and he said yes. He dropped off a menu (seemed very annoyed) and I ordered. I went to order the Tsukemen and he said they don't have it. WTF!? I just asked before I sat down! So, quick pivot and I ordered the tonkotsu ramen. The chef delivered some chicken karage and my soup. Chef was super friendly. The chicken was fine. Nothing special. I noticed my ramen didn't have any pork chashu in it (menu pic shows meat!). And the ramen came with 1/2 and egg, green onions and a sliver of black mushrooms. The soup itself was bland. I'm used to the thick creamy tonkotsu broth. This one wasn't good! Ramen noodles on the thinner side and no chewiness to it. $20 later and I was outta there! Never coming back. read more
1 year ago
This place is starting to become my go to for simple and trustworthy Japanese food. It's a very spacious place with quick service. My coworkers and I like to come here during lunch time because of how quick the service is and how high quality the food is. The highlight of the menu is definitely the chicken katsu curry. You just can't go wrong with it. The chicken is perfectly crispy, doused with flavorful umami curry and over a bed of rice. The spicy tonkotsu ramen is also pretty good but not life changing. The portions are also pretty big! I tend to pack up what I can for my next meal and I always look forward to it. read more
First time trying this place and it did not disappoint! A lot of seating for small or large groups. Flavor was great. I didn't have to add anything as it was already perfect. Service was on point. Will definitely be coming back. read more
8 months ago
Loved it here the Spicy Ramen with pork was so good and there takoyaki is good too! Everyone here was really nice and got our food out to us fast. Overall really nice place to relax and have a good bowl of ramen. Note: My fiance recommends the spicy miso ramen and honey green tea! read more
10 months ago
I arrived with a reservation to find they don't accept them - suggested Yelp edit already submitted. The service was terrible. Maybe they were short staffed because everything we ordered took much longer than it should have. Our appetizer (edamame) arrived after our ramen was delivered. Our entire experience was us waiting for items to be delivered. The men's bathroom door had graffiti on it, including a p3nis. Yes the ramen was good in the moment but it definitely messed up my stomach that I didn't trust to eat the left overs. read more
2 months ago
Forgot when was the last time I made a review but , since the last time my review still stands. This place is great and the quality is still the same. Forgot to take a picture of the food but, I tried the butter corn ramen and was not disappointed. Anything I've gotten here has always been good. read more
Came here after a long day of shopping at Ontario Mills and was craving something warm. There were plenty of seats when we arrived; however, it got packed around 7PM. Ordered Tonkotsu Ramen, Spicy Miso Ramen, and Chicken Karaage. I really loved how they provided a generous amount of meat and side ingredients such as eggs, seaweed, wood ear mushrooms, ginger, and green onions. Other places would've charged extra, so honestly, it was quite affordable for what you get. The meat was a bit tough and dry. Both dishes were rich in flavor, but I wouldn't say it was the best I've ever tasted. The Chicken Karaage was delicious. They were very generous with the portion size, and though the batter was a bit on the thicker side, it was crispy, hot, and evenly coated. Overall, I thought this place was a great option for comfort food. The interior could've been a bit more updated and cleaner. The cut of the meat could've been more consistent to prevent dryness. Minor issues in my opinion but still affordable and comforting. Great for large parties. Parking was easy. Staff was quick and nice. read more
6 months ago
4 months ago
2 years ago
Came here for dinner, which had a convenient location right next to the Ontario Mills, and there was no wait, though the inside area is small. I had the Tonkotsu ramen, and also split the chicken karaage and had a bit of the miso ramen as well. The tonkotsu is not bad, I like that there were four slice of meat, more than many other ramen places. I didnt like that the slab of ginger in there changing the flavor of the soup, or that the half egg's yolk was a bit overdone, but the flavor of the soup and the ramen noodles, and the pork is not bad. Same with the miso soup pork, and I liked how there was a lot of green onions in that one. I also liked how many pieces of chicken were in the chicken karaage. The batter was a bit thick and I wish this one was the one with a bit more ginger flavor, but otherwise not bad. Service is good and prices are decent. read more
We decided to eat here because our first option has a longer wait. On Sunday 1pm there's no wait at all. Just three tables right now and we were served immediately. We ordered the chicken cutlet curry and kuro ramen. I noticed the flyer for free ice cream if you tag and like this place in IG but I decided not to do. The ramen taste ok and the chicken cutlet curry is good. I think the chicken cutlet was freshly fried which is good. The ramen soup base doesn't have much of flavor. Service is very good. I'll give this experience 3.8 read more
9 months ago
Food was delicious. Hit the spot on a rainy day! Got the popcorn chicken miso ramen spicy (medium) had a god kick to it. read more
Smells good walking in! Was really craving ramen but the nearest options were ridiculous at $17-$18 a bowl, with reviews talking about skimping out and quality being subpar. I was not taking any chances! Food just doesn't hit like before and quality for the value can be hard to find, but this place gets it. Right when I walked in there was a flavorful aroma that let me know I was in for a treat. The place was empty with 2 other patrons, which was perfect for me. As soon as we sat, we were handed menus and given a moment to make selections. I was set on the Tonkatsu, my kids had the miso and udon selections. Spicy edamame was ordered for appetizer and it was definitely a highlight for the experience. The Udon came with a side of popcorn chicken and it was so flavorful, crispy, and delicious - definitely recommend! The star of the show is obviously the ramen! Just look at that picture - the portions, the color, the variety. I took one sip of the broth and dove right in. Every bite was umami with the perfect amount of green onion and ginger. The textures, the flavors, the warmth of the broth and the heat from the spicy edamame were a whole experience for me. I haven't had a good food experience like this in a long time and I'm just so grateful to have found this gem. read more
8 months ago
The ramen here is AMAZING! It's so flavorful. The cashier/waiter was very nice and was very attentive. They play good music not too loud but not too low either. Definitely recommend it to anyone who is a Ramen lover read more
9 months ago
Absolutely delicious food , ramen and popcorn chicken perfection. We came here quite often . My daughter loves the tonkatsu ramen. Highly recommended. Service is great and great ambiance. read more
9 months ago
Food is on point!!!!' Clean and decent place !!!!! Staff very attentive!!!!!!BRoiled Eel Plate My fave!!! read more
Friendly staff and a spacious dining area with high chairs available, but the food was entirely forgettable unfortunately. My tonkotsu shoyu's broth possessed decent savory flavor, but the noodles tasted store-bought and more like those found in wonton noodle soup... My wife's udon was okay, just lacking in seasoning and bounce. Prices were thankfully less than most other places we've tried in recent times, but the quality still wasn't commensurate. read more
2 years ago
Was craving some ramen since the weather has been a little chilly so decided to try this place. First off, it is a small place and table/seats are close to each other so you can basically hear each other's convos. We ordered the spicy ramen (medium) - one with pork and the other with popcorn chicken. Broth flavor was good and the all blended in together well. Out of both of them, I'd probably prefer the popcorn chicken over the pork because the one we got just basically had nothing but fat on it. We also ordered fried gyoza and spicy edamame. The spicy edamame has got to be one of my favorites out of all sushi places I've tried. Will come back just for that! Service is a little slow and and use some more friendliness. read more
036/2024 Met a friend and decided to have dinner. The place as we entered was not as busy and a server immediately approached us and seat us in a table with a window view. Weather was kinda chilly so I decided on the Udon soup. I also love the Croquettes so I was thinking "hmmmmm" , the soup will be soggy .... ....... But to my amazement the croquettes were served separately from the bowl of udon soup! Yeahhhh! Bravo!!! Croquettes were crunchy and tasty and the warm soup helped het me warm. I love their fried chicken gyoza. Crispy outside but tender flavored meat filling insid I read more
3 years ago
I was here for dinner with 2 other yelpers for the evening. Ordered: Chicken cutlet plate came with one Gyoza, Salad, Rice and soup. The chicken was crispy and delicious with the dipping sauce. The price is reasonable and affordable. The dining area is big and clean. Staff was friendly and good customer service. read more
1 year ago
9 months ago
First off the service was fast as well as the food. Spicy ramen was definitely just that. Portion sizes were good for the price. Only thing that they are doing wrong are the horrible Kleenex like napkins and they only give you a couple. Canned and bottled beverages but I just stuck with a water. read more
I love kosuke! In my opinion, it's the best spicy ramen I've ever had! I used to drive to their Alhambra location just to have it & I was so happy when they opened a new location in Ontario, which is so much closer to the city I live in. I've dine in 2x & the place has been clean & the service has been superb. I mostly order to go & never have any complaints. The portions are very generous. I sometimes eat half & save the other half for later. If you love spicy ramen & popcorn chicken I recommend you order the spicy miso popcorn chicken ramen. They have 3 spicy levels: mild, medium, & spicy. The spicy option is super spicy it's perfect! read more
Craving ramen? This place will surely suit your craving! I have been to their Alhambra location and this place popped on my radar looking around for places to eat around the Inland Empire. The place is almost as good their Alhambra location in terms of flavor, as for the ambiance is somewhat lacking of their decor and entertainment. Besides that, the service was superb. I was seated immediately after entering and my order was taken promptly after. The Popcorn Chicken should be your go-to order. The chicken is definitely a bit here compared to their other location and the broth has a very powerful punch that also goes quite with the popcorn chicken as a sauce. I would recommend you to ask for the popcorn chicken to be on the side and not directly in the soup. read more
2 years ago
Decent food with great service, nothing to complain excepts the food portion is really huge. Don't know how they survive when everything on the menu is cheaper than average. read more
11 months ago
6 months ago
3 years ago
Good flavorful Croquette udon (croquette served separately from soft udon soup). Tasty soft juicy gyoza. Warm friendly reception. Place clean and quiet and relaxing. Pleasant dinner experience. read more
2 years ago
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More info about Kosuke Ramen
4210 Inland Empire Blvd
Unit D
Ontario, CA 91764
Directions
(909) 719-9066
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https://www.kosukeramenonline.com
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Ask the Community - Kosuke Ramen
Are they doing take out yet?
Unfortunately, I don't believe so :( I really miss this place
Is this the same as the one in Alhambra?
Yes it is. Because it's new and unknown in the inland empire, there is virtually no waiting. So far, a best kept secret!!!!
Is the vegetable ramen vegan?
We can make it.please let server know when you order.
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