Wine Scandal at Michelin-Starred Mosu Seoul: What Really Happened?

Ahn Sung-jae | 2026.04.25

Star
Star chef Ahn Seong-jae attends a brand event
[TV Daily reporter Hwang Seo-yeon] A customer has accused Chef Ahn Seong-jae’s two-Michelin-star restaurant, Mosu Seoul, of swapping a wine during a pairing — and it’s sparked a public outcry. Mosu Seoul issued a statement, but critics say the on-duty sommelier failed to apologize in person.

On the 19th, an online user who goes by A posted on a community forum on the 21st under the headline, “Mosu Seoul swapped my Château Léoville Barton vintage.”

A wrote that the pairing list included a 2000 vintage, but the sommelier brought a 2005 vintage that was roughly 100,000 KRW (about $75) cheaper. When A asked the sommelier to confirm, the sommelier admitted the mistake and reportedly said, “The 2000 bottle had already been ordered with its bottle — it had been taken down to the first floor,” adding, “I’ll let you taste the 2000 Bordeaux in a glass.”

A dining companion, B, backed up A’s account. B said the group had been chatting casually — some were studying for a wine exam — when the incident happened. “Instead of apologizing, the sommelier tried to defuse the situation by saying, ‘You can compare the two vintages; it’ll help with your studies,’” B said, noting that no separate apology was offered.

The post spread online and criticism of Mosu Seoul grew. On the 23rd, Mosu Seoul posted an apology on its official social channels. The restaurant wrote, “We caused confusion by failing to provide accurate guidance during the wine pairing, and our explanations during customer service were insufficient.” It added, “We reached out to apologize directly to the guest, and they accepted our apology graciously, but we acknowledge that this response did not meet expectations.”

Mosu Seoul also stated, “Chef Ahn Seong-jae and all staff take this matter seriously and promise to prevent a recurrence,” putting Chef Ahn’s name front and center. Chef Ahn is widely known for his role as a judge on the Netflix series “Black & White Chefs: Battle of the Culinary Classes.”

After the apology surfaced, A posted additional details on the morning of the 24th. A said they visited Mosu on the evening of the 18th and that the issue occurred that night; there was no apology at the time. “Mosu was closed on the 19th and 20th, so I called on the 21st to explain the incident and ask for clarification,” A wrote. “After checking with the sommelier, Mosu apologized to me. They asked whether I was contacting them to seek compensation; I said I was not.”

A said they posted the story the next day at two cafés to warn others and to help prevent similar incidents at Mosu and other restaurants. “Mosu contacted me first on the 23rd and admitted that everything I wrote was true and offered no excuses,” A wrote. “They offered another meal, which I declined. I’m not seeking compensation — even if I accepted another invitation, it would make everyone uncomfortable.”

A emphasized that all posts were based on call recordings and message logs and therefore are accurate. In response to a commenter claiming A initially asked for compensation and then edited the post, A said, “I never edited the post and I never mentioned compensation. That’s a clear falsehood.”

After A’s follow-up posts, public sentiment against Mosu Seoul worsened. With Chef Ahn’s reputation for culinary skill and fair judging at stake, the wine-switching controversy could deal a serious blow to the restaurant’s brand.

[TV Daily reporter Hwang Seo-yeon news@tvdaily.co.kr / Photo=DB]
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