Kosuke

618-B W Main St, Alhambra, CA 91801, United States
+1 626-289-8030
$$$ Ramen restaurant
(538 Reviews)
Price Range $10–20

Welcome to Kosuke, a delightful ramen restaurant nestled in the heart of Alhambra, California. If you’re seeking authentic Japanese flavors in a cozy, unpretentious setting, Kosuke is a destination that should be at the top of your culinary to-do list.

As you step inside this charming eatery located at 618-B W Main St, you'll find a warm and inviting atmosphere, perfect for both casual meals and special outings. The friendly staff members are eager to welcome you and guide you through their enticing menu options.

The culinary highlight at Kosuke is, of course, the ramen, with a diverse selection that caters to all palates. The Miso Ramen is a fan favorite, served in a rich, savory miso-based broth with tender chashu pork or crispy popcorn chicken, beautifully complemented by a soft-boiled egg, seaweed, and fresh green onions—all for just US$9.25. For those craving an extra kick, the Spicy Miso Ramen boasts a special blend of spices that heightens the experience with every sip, while the Corn Butter Ramen offers a unique twist with sweet corn and creamy butter enhancing the traditional flavors of ramen.

This summer, don’t miss the Cold Ramen specials, including the Sesame Miso Chicken and Cold Spicy Miso, both priced at US$8.95 and available in limited quantities. They provide a refreshing option on hot days and showcase Kosuke's commitment to creative dining.

Pair your ramen with delectable plates such as the Japanese Fried Chicken Plate or Pork Cutlet Plate, both priced at US$8.95. These dishes promise to deliver crispy, comforting goodness that is sure to satisfy your cravings.

But don’t just take our word for it. Customers rave about their experiences at Kosuke. Janet Chang expresses her surprise at the gem after visiting, praising the attentive service that enhances the overall dining experience. Another customer, Sherns Wang, highlighted the flavorful broth of the tonkotsu ramen, perfectly complimented by tender chashu and generous portions. “The soup was super flavorful,” he remarked, affirming the high quality of the dishes served here.

Master-D completed his culinary adventure with a medium-spicy Tonkotsu and found every component, from the chewy noodles to the rich broth, perfectly executed. Meanwhile, Felisia Micky encourages ramen lovers to indulge in the many options that Kosuke presents, noting that you can customize your experience further by enjoying popcorn chicken on the side to maintain its crunch.

Kosuke isn’t just any ramen shop; it's a culinary experience wrapped in warmth, flavor, and community spirit. Whether you’re a ramen aficionado or just discovering the joys of this beloved dish, Kosuke welcomes you to a world of comforting flavors that promise to keep you coming back for more. Don’t hesitate; visit Kosuke today and let your taste buds embark on an unforgettable journey!

Accessibility
Has wheelchair-accessible car park
Service options
Offers takeaway
Serves dine-in
No delivery
Highlights
Has fast service
Popular for
Popular for lunch
Popular for dinner
Good for solo dining
Offerings
Serves alcohol
Serves comfort food
Quick bite
Dining options
Serves lunch
Serves dinner
Amenities
Has toilet
Atmosphere
Casual
Cosy
Trendy
Crowd
Popular with tourists
Popular with university students
Planning
Usually has a wait
Doesn't accept reservations
Payments
Accepts credit cards
Accepts debit cards
Accepts NFC mobile payments
Credit cards
Children
Good for kids
Parking
Free of charge street parking
Free parking lot
Somewhat difficult to find a space
Openings Hours
Checking

Monday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Tuesday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Wednesday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Thursday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Friday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Saturday

11:30 AM - 3:00 PM

,

5:30 PM - 9:00 PM

Sunday

Closed

538 Reviews
Janet Chang

31 Aug 2025

This ramen shop on Main St. in Alhambra may look unassuming from the outside, but it's truly a hidden gem that left us pleasantly surprised. The service here is also exceptionally warm and attentive, making the dining experience even more enjoyable. This time, my daughter and I ordered the Vegetable Ramen and Wakame Udon, with Popcorn Chicken and Agedashi Tofu as appetizers. My Vegetable Ramen featured a rich and savory broth, paired with tofu, scallions, corn, seaweed, and black fungus. Adding a touch of spice elevated the flavors, creating a more complex and satisfying taste. My daughter's Wakame Udon had a sweet and light broth made with seaweed, scallions, and fish cake, which was perfect for those who prefer a more subtle flavor. The Popcorn Chicken, a must-order dish at every table, was undoubtedly the highlight of our meal! Crispy on the outside and juicy on the inside without being greasy, it easily outclassed any popcorn chicken we've had elsewhere. The Agedashi Tofu was equally impressive, with its silky texture and perfectly balanced sauce. We're thrilled to have discovered this hidden culinary treasure and will definitely be back!

Sherns Wang

20 Aug 2025

Their parking is right next to the restaurant but it is limited. I got there at 6:10 and it was 1/3 full. Got the regular tonkatsu and it was pretty good! The soup was super flavorful. Their portions are pretty big too. Chashu was so tender! Popcorn chicken tasted pretty good in the popcorn chicken ramen bowl! Medium spicy was too spicy for me. I think I’ll do mild next time to try! You can add a small curry for 1.50. Not worth. I’ll want to try something else next time. Staffs were all so nice and service was quick!

Edmund Liao

15 Aug 2025

It's a cozy little shop right at the corner of Main & Atlantic. They have a small parking lot behind the restaurant, so you can usually find parking around here. If not, there's always a free parking structure nearby. The staff is really friendly and can give you good recommendations if it's your first time here. I would personally either their popcorn chicken ramen or chicken cutlet ramen. The chicken is super fresh and crispy here. The ramen broth is also really great. It's has authentic flavor and is not too thick like most other ramen restaurants. Keep in mind, since this restaurant is small in size, expect to wait during rush hour. But the wait usually isn't that long. They are also doing a little promotion that you can add $1 when ordering an entrée to add a side of gyoza with your food. So definitely give it a shot.

Master-D

18 Jul 2025

Great place for Japanese ramen noodles. The broth from the Tonkotsu bowl was unbelievable, and the ramen noodle was nice and chewy just the way I liked them. The black mushroom and sliced bamboo shoot were a perfect complement to the bowl. I ordered the medium level spice Tonkotsu bowl with popcorn chicken on the side so it won't drown in broth and get sogged out. I will order the spicy bowl next time as the medium spice didn't quite do it for me. The ramen noodle portion is generous compared to other Ramen noodle restaurants. Their curry pork cutlet was delicious as well. The restaurant is small and there's limited parking in the rear. Staff were friendly and courtesy. Will definitely come back.

Vball213

14 Jul 2025

This place is a hidden gem! It's a hole in the wall, but they have good food and great customer service! The prices are amazing as well. My boyfriend got the spicy Ramen with medium spice, and he was enjoying himself. He can handle spice well, but it got spicy for him, he still continued eating it though because it was yummy. "They're true to their level of spiciness." He would return ! 10/10 is his rating I got the classic tonkatsu Ramen and added a croquette for $1.50 I got one and a half perfect because I was stuffed with the Ramen. They gave thick pieces of cha sui, not stingy at all!!!! I'd definitely come back. I burned my tongue but it was worth it lol highly recommend coming here! 9/10

Felisia Micky

02 Jun 2025

Who love Ramen? Here one place i recommended, its called "KOSUKE RAMEN" at Alhambra. They got 11 choices of Ramen and 7 choices of Udon.I take the pictures for you to see. The price start from $ 12.50 - 16.99/bowl. For the spicy taate they got mild, medium and hot spicy. If you love popcorn chicken, you can ask them to give you on side, so when you eat it , still crunchy. And they got FREE ICE CREAM with condition super easy by take the pictures of your ramen when eat there, then post it, tag @kosukealhambra, and share it!! Dont Forget to click follow the IG of Kosuke (@kosukealhambra), theb show it to the staff, within 2 minutes your ice cream will be serve. Notes : IF you pay with credit card there will be additional charge 3%. Fyi, the staff can speak Indonesian Language!

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