Tosoba
唐そば
Overview
"Karasoba," a long-established tonkotsu ramen (pork bone ramen) restaurant, is conveniently located in the Sanshin Building at Shibuya 2-22-6, just a 3-minute walk from Shibuya Station B5 exit on the Tokyo Metro Hanzomon Line and Tokyu Den-en-toshi Line, and a 5-minute walk from JR Shibuya Station East Exit. Founded in Kurosaki, Kitakyushu in 1959 (Showa 34), and relocated to Shibuya in September 1999, this establishment boasts over 60 years of history. It has been cherished by both local patrons and enthusiasts from afar as a representative tonkotsu ramen shop in the Shibuya Station East Exit area. The greatest feature is its double soup, crafted from carefully selected fresh pork bones, local chicken carcasses, aromatic vegetables, and Japanese dashi (wadashi). This creates a relatively light flavor profile free of impurities, yet it offers a robust umami and a subtle sweetness. The distinctive light brown soup is emulsified and slightly thickened. Thanks to the effect of the wadashi, its umami expands with changes in temperature, a refined design that ensures you can enjoy it without tiring from the first bite to the last. The homemade straight noodles are uniquely prepared by blending three different thicknesses. Each thickness provides a distinct texture and way of carrying the soup, allowing for a varied experience with every mouthful. They are boiled slightly softer, ensuring excellent entanglement with the soup. The chashu (sliced pork topping) is a pork belly roll, offering a pleasant chewiness and a simple, rich meat flavor. Classic toppings like kikurage (wood ear mushrooms), bean sprouts, and green onions add texture and a refreshing accent to the aftertaste. For tsukemen (dipping noodles), the dipping broth contains finely sliced takuan (pickled daikon), which serves as a unique accent to the tonkotsu dipping sauce. A separate plate of yuzu koshō (citrus chili paste) is also provided to allow for a change in flavor halfway through the meal. The spacious interior, with 30 seats, offers a calm atmosphere where even families can feel comfortable.
How to Order
1Before entering
Located in Sanshin Building at Shibuya 2-22-6, a 3-minute walk from Tokyo Metro Hanzomon Line/Tokyu Den-en-toshi Line Shibuya Station B5 exit, a 3-minute walk from Tokyo Metro Ginza Line Shibuya Station Meiji-dori exit, and a 5-minute walk from JR Shibuya Station East exit. Open long hours: Mon-Sat 11:00-21:00, Sun 11:00-16:00. Congestion varies by time of day; for example, on weekdays, there may be only one customer after 11:00 AM, but the shop can be almost full with some empty tables around 1:15 PM.
2Seating and ordering
There is no ticket machine; customers verbally order to staff after being seated. Menu highlights include Ramen for 900 yen, Tsukemen, Tsukemen Special Large (Tokumori) for 1100 yen, Tsukemen Large (Omori) for 1000 yen, and 2 Onigiri for 100 yen. Payment is cash only; credit cards, e-money, and QR code payments are not accepted. The payment system is unique: it's self-declaration without a bill, where you tell the staff your ordered items when leaving and settle the payment.
3Seating and receiving
The spacious layout with 30 seats (12 counter seats + 18 table/raised tatami seats) makes it a welcoming space for families. Staff will guide you to an empty seat, and your order will arrive in approximately 5-7 minutes. The interior has a well-used atmosphere, suggesting the shop has been in business for a long time.
4Other notes
This is a long-established shop founded in 1959 (Showa 34) in Kurosaki, Kitakyushu, and relocated to Shibuya in September 1999. It has a history of over 60 years as a prominent tonkotsu ramen shop in the Shibuya Station East exit area. The soup is a double broth made from carefully selected fresh pork bones, local chicken carcasses, aromatic vegetables, and Japanese dashi. It has a clean, relatively light taste, yet offers a rich umami and a subtle sweetness. The distinctive feature is its milky brown, emulsified, slightly thick soup, whose umami deepens with temperature changes, ensuring enjoyment until the last drop. The homemade straight noodles are a blend of three thicknesses, creating different textures and unique ways of holding the soup. The tsukemen dipping sauce includes finely chopped takuan (pickled daikon), which acts as an accent, and yuzu kosho (citrus chili paste) served separately for a change of flavor.
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Seating
Tables seat up to ~4 people. Groups of 5+ will need multiple tables and may wait longer than usual.
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Voices
渋谷 唐そば
— moririyyy (@momomomoriyyy) February 25, 2026
20年ぶりくらいに食べた。
さっぱり食べやすい豚骨で美味しい😋 pic.twitter.com/3si1reAKWT
今日は、渋谷の唐そばで、大盛りラーメンとおにぎりを食べました。
— オル爺 (@kenseinokyusoku) March 1, 2026
およそ30年ぶりに地元の味を堪能出来て幸せでした〜😁
なぜだか分かりませんが、昔からコショウたっぷりかけて食べるとそのままより美味しく感じます。#日常 #友達募集中 pic.twitter.com/IKokDptd4r
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Reviews
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Business Hours
Crowd Calendar
| Lunch | Afternoon | Dinner | Late night | |
|---|---|---|---|---|
| Weekday | Up to 15 minRef. | - | - | - |
| Weekend | - | - | - | - |
* Dashed cells = reference data from past visit examples (replaced once enough reviews arrive)
Dietary Notes
No dietary data yet
This information is based on user reports and is not official information from the shop. Cross-contamination in the cooking environment cannot be guaranteed. If you have severe allergies, please confirm directly with the shop.
Animal-free menu available
Reports received (1)
No MSG
Reports received (1)
Gluten-free menu available
Reports received (1)
Halal options available
Reports received (1)
Dietary information is verified through blind consensus. Reports become public when 3 or more independent users agree.
Ingredients & Allergens
Allergen info coming soon
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