Ants
South Korean authorities say ants are not among the country's approved edible insects. Pexels/Egor Kamelev

A Michelin-starred chef in South Korea could face prison after prosecutors accused his luxury restaurant of illegally serving desserts topped with dried ants, an ingredient prohibited under the country's food safety laws.

The unusual case has placed one of Seoul's most celebrated fine-dining establishments under intense scrutiny, with prosecutors seeking a one-year jail sentence for the restaurant's owner and a hefty financial penalty for the company behind the two-Michelin-star venue. While edible insects are increasingly appearing on tasting menus around the world, authorities argue that this particular culinary flourish crossed the line because the insects had never been approved for consumption in South Korea.

The investigation centres on a two-Michelin-starred restaurant in Seoul's affluent Gangnam district, where diners were allegedly offered a sorbet dessert finished with a sprinkling of dried ants. According to prosecutors, the garnish was designed to add a sharp, citrus-like acidity and elevate the dish, but its use may have breached the country's Food Sanitation Act.

Why The Ant-Topped Dessert Was Illegal

Unlike some countries that allow a broader range of edible insects, South Korea has strict rules governing which species can legally be served in food. Only 10 insect species have been approved for human consumption, including mealworms, grasshoppers and silkworm pupae. Ants are not among those authorised ingredients.

Businesses wishing to use an unapproved insect must first secure temporary approval from the Ministry of Food and Drug Safety before introducing it to customers. Prosecutors allege the restaurant failed to obtain that permission before importing and serving dried ants.

Authorities claim the restaurant imported the insects from the United States and Thailand between 2021 and 2025 before using them as an optional garnish on selected desserts.

Under South Korean law, violating food safety regulations carries a maximum sentence of five years' imprisonment or a fine of up to 50 million won, equivalent to approximately £25,270.

Prosecutors And Restaurant Clash Over The Numbers

Prosecutors allege the restaurant served the ant-topped dessert around 12,200 times, generating roughly 120 million won—about £60,647—in revenue during the period under investigation.

Investigators also estimate that nearly 49,000 dried ants were used across the restaurant's tasting menus. The defence, however, disputes those figures, insisting prosecutors counted every customer who ordered the dessert even though many declined the optional ant garnish.

According to the restaurant, only around 60 per cent of diners chose to have the ants added, meaning both the number of insects used and the total revenue linked to the garnish have been overstated.

Chef Defends International Fine-Dining Technique

The restaurant has argued that the controversial garnish represented only a small part of its 15-course tasting menu and was never compulsory. During court proceedings, the chef explained that ants were used to provide natural acidity and complexity rather than simply for visual impact or novelty.

He also maintained that the technique was one he had learned while working in high-end restaurants across Europe and the United States, where edible ants have featured on fine-dining menus for years.

The defence further noted that restaurants in countries including the UK, Denmark and Australia have also incorporated ants into dishes, arguing the chef was unaware that South Korean regulations differed so significantly.

Customers who preferred not to try the ingredient were reportedly offered the dessert without the ant topping.

Social Media Triggered The Investigation

One of the most unusual aspects of the case is how authorities discovered the alleged offence. Rather than uncovering the issue during a routine inspection, officials from the Ministry of Food and Drug Safety reportedly launched their investigation after spotting photographs, videos and customer reviews shared across social media and blogs.

The online posts repeatedly highlighted the restaurant's ant-topped sorbet, prompting officials to examine whether the ingredient complied with South Korean food regulations.

The case has since sparked wider discussion about the challenges facing modern fine dining, where chefs increasingly experiment with unusual ingredients inspired by global culinary trends.

While edible insects have become more common in sustainable gastronomy and Michelin-starred restaurants overseas, food safety laws vary considerably between countries, leaving chefs responsible for ensuring every ingredient complies with local legislation.

The Seoul court is expected to deliver its verdict on 2 September. If prosecutors succeed, the case could become one of South Korea's highest-profile examples of how even internationally recognised chefs are not exempt from the country's strict food safety rules.