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Saku Ramen

3.9 1,217 reviews Open 24 hours 3643 Main St, Riverside, CA 92501, United States

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Saku Ramen is a Japanese restaurant located on Main Street in Riverside, California. It specializes in ramen dishes that range from traditional to inventive, featuring a variety of broths such as tonkotsu, oxtail, miso, and vegan options. The menu highlights include the Drunken Ramen and Niku Soup served with yellow noodles, egg, spinach, bean sprouts, and mushrooms. Alongside ramen, the restaurant offers authentic Japanese fried rice choices incorporating pork, niku, tofu, or vegetables. Beverages include a selection of crafted sodas, green teas, and Ramune, a classic Japanese soda. The interior atmosphere is casual and welcoming, designed to complement the focused menu and provide a straightforward dining experience. Saku Ramen stands out for its balance of classic flavors and contemporary variations, catering to diverse dietary preferences within a simple setting. Its presence contributes to the local food scene by offering accessible Japanese cuisine with attention to traditional preparation and contemporary twists.

Photos

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Amenities & More

Service options

  • Outdoor seating
  • Delivery
  • Onsite services
  • Takeout
  • Dine-in

Highlights

  • Fast service
  • Serves local specialty

Popular for

  • Lunch
  • Dinner
  • Solo dining

Dining options

  • Lunch
  • Dinner
  • Counter service
  • Seating

Amenities

  • Bar onsite
  • Restroom

Atmosphere

  • Casual
  • Cozy
  • Trendy

Crowd

  • College students
  • Groups
  • Tourists
Note: Amenity details are aggregated from verified visits, the venue's website and Google. They may change without notice. We recommend confirming key details (pet policy, accessibility, reservations) directly with Saku Ramen before visiting.

Reviews for Saku Ramen

3.9
1,217 reviews
5
100%
4
31%
3
19%
2
14%
1
24%

Review highlights

Based on 1,217 reviews

Saku Ramen in Riverside is widely praised for its flavorful and well-balanced ramen, with many customers highlighting the rich tonkotsu and oxtail broths as standout menu items. The restaurant’s 24-hour operation is a significant draw, offering convenient access to quality Japanese cuisine at any time. Patrons appreciate the clean, modern ambiance, including a pleasant outdoor patio and bar area, which suits both casual dining and date nights. Friendly and attentive service is consistently noted, enhancing the overall dining experience. Some feedback points to minor issues with dining area setup and occasional strong cleaning product smells, but these do not overshadow the generally positive impressions of food quality and atmosphere.

Maedae in the Kitchen
Apr 14, 2026

Great food! Great service! Love that they are open 24 hrs. The ramen is delicious as always and their new sweet n spicy wings are amazing! Oh and the fried rice! Basically every time I go the food is really good! It makes what I listed below a little more tolerable. 2 bad things when dining in... 1. It smells like cleaning chemicals. That's great to know that they take cleanliness serious but it should smell so strong. Certain area in the dining area we're stronger and gave us a baby headache. 2. No AC. Which I'm sure they know it's a problem, especially if your serving hot ramen haha I hope they can get it fixed soon. The poor workers were fanning themselves with menus.

Mark Sanford
Feb 17, 2026

Very good quality food, modern ambience, good for a date night. They have a nice outdoor patio and also inside seating and a bar. Also they are open 24/7. We need more 24/7 food access that's not just del taco, jack in the box, and Castaneda's. I'm glad I found this place. It was very clean when I was there and even though it was late and the staff must have been tired they were very kind, friendly, and professional. I recommend trying here for lunch or dinner if you haven't before.

Dacy Nottingham
Feb 16, 2026

The ramen was great! I'm definitely coming back. I wasn't a big fan of the table set up.

Jeff Benito
Feb 02, 2026

I have eaten at Saku Ramen several times now and it has been consistently good each visit. My go to order is the tonkotsu ramen. The broth is rich and full of flavor, the noodles have a good texture, and the overall bowl feels balanced and satisfying. I have also tried a couple of other menu items and have enjoyed everything so far. One of the biggest perks is that they are open 24 hours, which is not easy to find in downtown Riverside. Whether it is a late night craving or an earlier dinner, it is a convenient option. It can get a bit pricey once you start adding extras, and some of the seating is not the most comfortable if you plan to stay a while. Still, the quality of the food and the convenience make it a spot I continue to come back to.

Ryma Del piero
Jan 28, 2026

I ordered the oxtail ramen, and it was absolutely delicious! The flavors were rich, savory, and perfectly balanced. The service here is also amazing — everyone was friendly, attentive, and made the experience even better. The decorations are lovely and the whole place has a really nice, relaxing vibe. Highly recommend this spot! I’ll definitely be coming back.

Tony Yo
Jan 15, 2026

Came upon this place on my morning walk, after staying in the Mission Inn. I saw the "OPEN' sign and wondered if they were actually OPEN at 8 am for a restuarant. This ramen spot is open 24 hours, i wish i would of known for my late night cravings. As soon as i walked in i was greeted by Robert, he was very friendly and hooked me up with a bowl of Spicy Tonkotsu ramen with extra pork chashu. The broth was amazingly delicious, and potent with the spice i liked. The bowl was really well portioned with ramen noodles, mushrooms, and green onion. I suggest to ask for chilli oil and spicy sauce on the side to adjust to your spice level liking. Overall the tonkotsu broth, and pork chashu was authentically tasteful. I would recommend this to anyone that needs a morning meal to wake your body up from any hangover or even to enjoy a bowl of soup. I'll definately come back to try out their other foods they offer!

AA
Jan 12, 2026

The best food I have while I was in Riverside. So good that I visited twice. I had the tonkotsu and Tori and they were both fantastic and I highly recommend.

Mason Kimel
Jan 01, 2026

Went here on a whim after a appointment at the local city hall. The food was delicious and the staff were kind and quick, will definitely be going back next time I’m in the area

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Quick info

Address
3643 Main St, Riverside, CA 92501, United States
Price range
$10–20
Category
Japanese restaurants

Opening hours

  • Monday (Today) Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

Location

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