Menu for Sushi Koshu in Diamond Bar, CA
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Open:11:30 AM - 2:00 PM
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Cuisines:
Japanese Asian
Japanese Asian
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Features:
Takeout , Delivery
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Known for:
Wine, Good for kids, Wi-Fi, Casual, Cozy, Beer, Comfort food, Healthy options, Small plates, Good for groups, Solo dining, Staff required to disinfect surfaces between visits, Mask required, Staff wear masks, Accepts reservations, Bar onsite, Catering, Fast service, High chairs, Restroom, Seating, Wheelchair accessible entrance, Wheelchair accessible parking lot, Wheelchair accessible restroom, Wheelchair accessible seating, Dinner reservations recommended, Alcohol, Dessert, Dine-in, Dinner, Popular Dinner, Lunch, Popular Lunch,Read more
Sushi Koshu in Diamond Bar, CA, is a sought-after Japanese restaurant, boasting an average rating of 4.2 stars. Here’s what diners have to say about Sushi Koshu. Don’t miss out! Today, Sushi Koshu will open from 11:30 AM to 8:30 PM. Whether you’re curious about how busy the restaurant is or want to reserve a table, call ahead at (909) 869-7881.
Stay home and order out from Sushi Koshu through DoorDash.
Other attributes include: good for kids.
Looking for different restaurants with a similar menu? You should check out Sunright Tea Studio - Diamond Bar and AP GU JUNG (Abeom Soondae).
Got a favorite dish here? Let us know, and leave a review!
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They?re so nice! The photos should tell you that the food is excellent. Looks super fresh not much to say. We got a boat, sushi... boats? what?s that all a-boat?! DO. YOU. GET. IT? Isn?t it funny to think about? The fish was once alive in the ocean and thencaught on a boat, and now served on a decorative play boat? something to think about Read more
It's not owned by Japanese. The food is expensive but doesn't match the Japanese sushi quality. Try it out yourself once and you... will know. Just make sure you order the cheap sushi first to see Read more
Edit: April 2022 - ordered our usual ?Take set? the price of this set went up but I feel as if the quality of this dish has gone... down. Previously, the roll that came with this set was a tuna maki roll but that got switched with a California roll ????. Nothating on a California roll, but that?s not what I paid for. The rice was unseasoned and no wasabi between the rice/fish, someof the toppings were missing. The finesse of the meal was gone. It kind of reminded me of an all you can eat sushi place. Fromother reviews, looks like the ownership may have changed. Old review: Finally tried this sushi location and glad we did.Ordered 2 hikaru bento boxes ($80/bento - June 2020) for our wedding anniversary. Ordered to go and it came with a paper guidewith chef recommendation order (missed one letter (b in the picture) but that?s not a big deal - I am curious though in where itwould be placed in the order. Bento box was portioned into 4 sections - white fish and seaweed salad, nigiri ???? set, chirashiset, and cooked fish/crab. Also came with an egg custard and matcha pudding. Definitely would recommend. Looking forward totrying items from their regular menu in the future. Read more
Parents of a friend from awhile ago owns this place. Was told about their Hikaru Bento and had to try it. Definitely wish I had... not nigiri or sashimi instead of the comes fish. Maybe they can substitute if you ask. Not sure if it's the same every timeeither. Overall though it was really good. I never questioned the pricing while I was eating. Read more
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FAQs
When is Sushi Koshu open?
Sushi Koshu is open on the following days:
Monday: 11:30 AM - 02:00 PM 05:00 PM - 08:30 PM
Tuesday: 11:30 AM - 02:00 PM 05:00 PM - 08:30 PM
Wednesday: 11:30 AM - 02:00 PM 05:00 PM - 08:30 PM
Thursday: 11:30 AM - 02:00 PM 05:00 PM - 08:30 PM
Friday: 11:30 AM - 02:30 PM 05:00 PM - 09:00 PM
Saturday: 05:00 PM - 09:00 PM
Sunday: 12:00 PM - 02:30 PM 05:00 PM - 09:00 PM
Does Sushi Koshu offer delivery?
Yes, Sushi Koshu offers delivery.
Fantastic sushi restaurant! Food was great. I ordered the Tempura combination and it was so goood! Thank you Sushi Koshu!