Restaurant
Onsen Japanese
609 Lonsdale St, Melbourne VIC 3000, Australia
Find Onsen Japanese
609 Lonsdale St, Melbourne VIC 3000, Australia
Directions ↗*Opening hours may differ during holidays.
Book NowAbout Onsen Japanese
Right on Lonsdale Street, Onsen Japanese transports Melbourne noodle obsessives straight into a Tokyo alley with rich, slow-cooked tonkotsu broth. The space is tight and narrow—paper lanterns overhead, Japanese tracks in the background, and solo counter stools lining the bar. Regulars drop in for the signature pork broth, dense with umami and paired with firm, springy noodles, or ramp it up with the spicy tonkotsu for a sharp chili kick. For rice over soup, unagi don arrives coated in a caramelized tare glaze alongside tender ribbons of egg crepe. Kitchen tickets clear in minutes via QR code, giving CBD desk workers a swift, quiet escape before heading back to the pavement.
- Rich Tonkotsu Broth: Pork broth simmered deep and savory, served alongside firm noodles and a balanced spicy variation.
- Tokyo Alley Ambience: Lanterns, background music, and dedicated single-diner counter stools recreate a compact Japanese noodle bar.
- Swift CBD Counter Service: Fast turnaround times and direct mobile ordering get steaming bowls to your stool within minutes.
- Glazed Rice Bowls: Savory rice bowls, including glazed unagi don layered with finely shredded egg crepe.
What's On at Onsen Japanese
Upcoming events, special menus and other reasons to plan a visit.
No events or specials listed right now.
Why Choose Onsen Japanese
Rich tonkotsu broths, intimate solo counter seating, and fast-paced Tokyo diner energy on Lonsdale Street.
Deep, Savory Tonkotsu Broth
Slow-simmered pork broth delivers intense, deeply concentrated umami balanced with firm, bouncy noodles.
The noodles are cooked perfectly, offering a great firm texture that complements the dense broth.
Mimmin Supercute Crispy Katsu & Comforting Rice Bowls
Crispy katsu and tender stewed meats pair with balanced Japanese curry and aromatic donburi rice bowls.
The katsu curry was very flavourful without being too spicy, and the pork was crispy.
Caitlin C Authentic Tokyo Alleyway Atmosphere
Traditional lanterns, Japanese background music, and alleyway-style decor evoke genuine memories of Tokyo.
the whole setting with the lanterns, music, art and atmosphere transports you instantly to Japan.
Deb Bradley Welcoming Solo Counter Seating
Dedicated solo dining counters and cozy bench seating make independent meals effortless and relaxed.
have a one person seat so it's comfortable if you eat by yourself.
haloha haloha Speedy Turnarounds in Minutes
Quick digital ordering and an ultra-fast kitchen deliver steaming bowls to tables within minutes.
order via qr code, our food came within 5 minutes.
Joie Lou Convenient Melbourne CBD Refuel
A cozy, low-stress retreat right on Lonsdale Street offering an effortless refuel before transit or work.
this is a perfect lunch spot for anyone working around the CBD, a quick good lunch
Vicky Nguyen
Most popular items
Signature Japanese ramen and rice bowls praised by diners
Tonkotsu Ramen
Onsen Tonkotsu Ramen (the original, which I loved for its rich, aromatic pork broth)
Mimmin Supercute Spicy Tonkotsu Ramen
This time, I tried the Spicy Tonkotsu Ramen for $19.50, and I highly recommend it.
Mimmin Supercute Katsu Curry
The katsu curry was very flavourful without being too spicy, and the pork was crispy.
Caitlin C Unagi Don
The unagi don was everything I remembered , rich, buttery eel coated on beautifully caramelised glaze.
edelicious blog
Frequently Asked Questions
How do ordering and service work?
Orders can be placed directly from your phone using a table QR code or at the counter with the cashier, with food typically arriving to your table within 2 to 10 minutes.
Is the restaurant suitable for solo diners, and do queues form?
Yes, the dining space is compact with narrow counter bench seats and small booths, making it well-suited for solo diners or pairs. Peak evening times around 6:30 PM can see queues outside.
Are vegetarian and allergy-friendly options available?
Yes, vegetarian options such as the vegetable tempura udon curry are available on the menu, and staff can assist walk-in diners with navigating specific dietary requirements.
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