Croatia has an underwater winery called the Edivo Vina winery, which is located at the bottom of Mali Ston Bay. The wine is first made above water and then stored in clay jugs under water for two years to reach its peak taste.
The clay jugs add a pinewood aroma to the wine and can be purchased as empty souvenir jugs as well. When the jugs are brought up after a couple years they’re covered in shells and coral.
To make sure that no liquid gets in or out while the jugs are underwater, they are corked and put in rubber. Then they’re locked up so that no one takes a sample without paying.
The concept came from the idea that “the sea provides natural cooling in ideal conditions and the perfect silence underwater improves the quality.”
Visitors to the area are allowed to dive down and check out the clay jugs as well as a sunken ship in the bay that acts as a wine cellar.