The Experiment

Hurtigruten, a Norwegian cruise line, and Rathfinny Wine Estate embarked on a groundbreaking experiment known as “Havets Bobler” (Bubbles From the Sea). They submerged 1,700 bottles of sparkling wine in the Norwegian Sea for six months, at a depth of 111 feet and an average temperature of 41 degrees Fahrenheit.

The team hypothesized that the cold temperatures, lack of light, and high pressure would result in unique changes in the wine’s flavor, consistency, and effervescence.

The Results

After six months, the bottles were retrieved and tasted by a panel of experts, including Nikolai Haram Svorte, Norway’s best sommelier for 2023. The wine had retained “more freshness than anticipated,” with refreshing citrus tones and a mineral salty finish reminiscent of oysters.

Svorte concluded that the underwater aging experiment had revealed a promising new setting for storing and aging sparkling wine.

The Science Behind Underwater Aging

The cold temperatures, darkness, and high pressure in the Norwegian Sea created unique conditions for wine aging.

• Temperature: The consistent low temperature slowed the aging process, preserving the wine’s freshness and acidity.
• Darkness: The absence of light prevented the formation of compounds that can cause oxidation and spoilage.
• Pressure: The high pressure exerted on the bottles increased the solubility of carbon dioxide, resulting in finer and more persistent bubbles.

The Sensory Impact

The underwater aging process had a noticeable impact on the wine’s sensory characteristics:

• Bubbles: The bubbles were softer and more persistent, creating a velvety texture on the palate.
• Flavor: The wine exhibited a complex and harmonious balance of citrus, mineral, and salty notes.
• Mouthfeel: The underwater aging rounded out the wine’s mouthfeel, giving it a smooth and creamy texture.

Implications for Winemaking

The results of the Havets Bobler experiment suggest that underwater aging could become a valuable tool for winemakers. It offers the potential to:

• Preserve freshness and acidity in sparkling wines.
• Create unique and complex flavor profiles.
• Develop a more sustainable and environmentally friendly method of wine storage.

Hurtigruten’s Culinary Innovation

Hurtigruten is incorporating the underwater-aged sparkling wine into its culinary offerings on its ships. Passengers can enjoy it as a standalone beverage or as part of cocktails inspired by the Norwegian landscape.

The company is also experimenting with other innovative culinary concepts, such as vodka infused with pine needles from the island of Traena and a cocktail called Epleslang, inspired by the guilty pleasure of stealing apples from neighboring trees.

Sustainable Shipping and Innovation

Hurtigruten is committed to sustainable practices throughout its operations. In addition to the underwater wine aging experiment, the company is developing a zero-emissions vessel that could revolutionize the cruise industry.

This innovation demonstrates Hurtigruten’s dedication to reducing its environmental impact and providing its passengers with unique and unforgettable experiences.