Caviar

With off-the-wall dishes like butterfly wings or simple local products, restaurants Denmark, the recent darling of the culinary world, in are outdoing each other to emulate Noma, a soon-shuttering three-starred eatery.

Exported across Europe, Romanian caviar was as legendary as it was expensive. In 1960s Britain, it was known as 'millionaires' food', fetching more than £16 per lb and helping to prop up Romania's shaky finances. "The state took everything back then," Ivanov said.

More than 20,000 three month old fish from the critically endangered species of Russian sturgeon took their way from Belene through the Danube delta to the Black Sea, the organization said. The Russian sturgeon is among the last four sturgeon species that are still found in the Danube.

Some 140 Bulgarians have become victims of labor exploitation abroad since 2013.

The statistic figures have been provided by the National Commission for Combating Trafficking in Human Beings, who added that this was just the tip of the iceberg.

Fish breeding in the dams of the landlocked southern Turkish province of Kahramanmaraş are exported to 15 countries across the world, daily Hürriyet has reported.

WWF Bulgaria has implemented a project to release more than 50,000 baby sturgeons in the Danube to help bring the species back from the brink of extinction, AFP reported on Tuesday.