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There are some places you hear about, some you stumble upon, and then there are places like Yanggun Sushi n Tuna in Jamsil – a true hidden gem that will redefine your expectations of value and quality. Tucked away quietly in the basement of an old, unassuming apartment complex near Jamsil Station, this isn’t your average sushi spot. Our reviewer, a seasoned foodie, initially visited out of curiosity and left profoundly impressed, even “worried about the owner’s generosity!”

Discovering Jamsil’s Hidden Treasure

Finding Yanggun Sushi n Tuna is part of the adventure. Located a mere 9-minute walk from Jamsil Station and 10 minutes from Jamsillaru Station, it resides in a vintage apartment commercial building, blending seamlessly into the local landscape. The interior is modest, with only about five tables, suggesting that most of its clientele are locals who prefer delivery or takeout – a testament to its word-of-mouth reputation rather than flashy marketing.

The name “Yanggun” likely hints at the owner’s surname, Mr. Yang. As our reviewer soon discovered, Mr. Yang is not just any chef; he’s a veteran with 18 years of experience in the raw fish business. He bravely opened Yanggun Sushi n Tuna about a year ago, right when the pandemic hit, making its journey to widespread fame a quiet, albeit impactful, one. This backstory only adds to the allure of this extraordinary eatery.

The Star of the Show: Tuna Sushi (참치초밥)

A Quality That Makes You “Worry About The Owner”

The undisputed main event here is the Tuna Sushi (참치초밥). Our reviewer was utterly astonished by the quality, especially considering the price. At just 12,000 KRW (prices may vary), the tuna offered here is of a caliber usually found in high-end establishments. This isn’t just good tuna; it’s exceptional.

• Unbelievable Value: The quality far exceeds its modest price tag, making it an incredible deal.
• Generous Portions: Each piece features a thick, substantial cut of tuna, so large it practically dwarfs the perfectly seasoned rice beneath. You could honestly eat the tuna as sashimi alone and feel satisfied.
• Melt-in-Your-Mouth Texture: The tuna is impeccably aged, delivering a buttery, melt-in-your-mouth texture that feels almost like fresh, raw tuna.
• Exceptional Marbling: The marbling on the tuna is visually stunning, hinting at the rich flavor and exquisite tenderness within. Our reviewer’s photos truly capture its allure.

It’s this level of quality and generosity that led our reviewer to playfully express concern for the owner’s business model – a true sign of a customer utterly floored by the experience.

Beyond Sushi: Assorted Sashimi & Delectable Sides

Assorted Sashimi (모듬회) – A Feast for the Senses

Not content with just the sushi, our reviewer also indulged in the Assorted Sashimi (모듬회). This dish further highlighted Yanggun’s commitment to quality over mere quantity. It featured premium cuts, including the coveted fatty tuna belly (대뱃살) and medium fatty tuna belly (중뱃살), both boasting incredible marbling and flavor. Like the sushi, the sashimi was perfectly aged, resulting in a rich, flavorful, and incredibly satisfying texture.

Starter Delights: Braised Mackerel and Radish

Before the main event, simple yet delicious side dishes are served. The Braised Mackerel and Radish (삼치와 무 조림) stood out. Served slightly spicy, it proved to be an excellent appetizer, perfectly complementing an alcoholic beverage and preparing the palate for the feast to come.

Comforting Closers: Tuna Stew vs. Roe Stew

To round off the meal, Yanggun offers two types of stew: Tuna Stew (참치탕) and Roe Stew (알탕). The Tuna Stew, an uncommon dish, features flavorful tuna cuts in a rich, thick, and slightly oily broth. While hearty and satisfying, our reviewer personally preferred the Roe Stew for its cleaner, more refreshing, and savory profile, especially given the warmer weather. Both, however, serve as perfect accompaniments to a drink and provide a comforting finish to the meal.

The Visionary Behind Yanggun: An Owner’s Dedication

Yanggun Sushi n Tuna’s story is one of passion and perseverance. Despite opening during challenging times, Mr. Yang’s 18 years of expertise shine through in every dish. The restaurant’s humble exterior belies the incredible culinary journey that awaits inside. It’s the kind of place you discover through a friend’s recommendation or a chance delivery, only to find yourself returning week after week. The friendly owner and cozy atmosphere contribute to an overall pleasant dining experience, allowing guests to relax and savor every bite.

Final Verdict: A Sushi Experience Like No Other

It’s rare to be genuinely moved by a dining experience, but Yanggun Sushi n Tuna achieves just that. The unexpected exterior, combined with incredibly reasonable prices and mind-blowing quality, creates a truly unforgettable impression. Our reviewer unequivocally declared it the best sushi and sashimi experience they’ve had in terms of price-to-quality ratio. If you’re in Jamsil and seeking an authentic, high-quality, and deeply satisfying sushi and sashimi meal without breaking the bank, Yanggun Sushi n Tuna is an absolute must-visit hidden gem.

Location & General Rating:

• Restaurant Name: Yanggun Sushi n Tuna (양군 쓰시 n 참치)
• Address: Basement of an old apartment commercial building near Jamsil Station (approx. 9-minute walk) and Jamsillaru Station (approx. 10-minute walk), Seoul, South Korea.
• General Rating: A phenomenal hidden gem offering exceptionally high quality and value for money. Highly recommended for tuna and sashimi lovers looking for an authentic and budget-friendly gourmet experience.