The responsible business of Danish blue gold

The responsible business of Danish blue gold.

Mussel harvesting in Denmark’s Limfjord is a centuries-old tradition that comes with a big responsibility. Every business that makes a living from the so-called blue gold is bound to protect it for future generations – by safeguarding the seabed and ensuring only mature mussels end up on the processing line.

Founded in 1986, Vilsund Blue receives a large proportion of the mussels fished in and around Limfjord for processing at its three factories. Around 90% are exported to markets all over Europe, where they are enjoyed for the quality that only the cool fjord can provide.

First recognition of sustainable sourcing

As an industry that relies on trawling, an overview of the exact location of the mussel banks is essential both to ensure minimal disturbance of the seabed and fishing efficiency.

This is an area of long-standing effort for Vilsund Blue. Consequently, in 2010, the shellfish business gained the right to use the MSC label, when the Marine Stewardship Council awarded the ever first certificate for sustainably sourced mussels. MSC certificates for the company’s oysters and rope-grown mussels have followed.

Sorting the catch

The first priority when the shellfish are landed is to sort the catch. Small, immature mussels are removed and returned to the mussel banks so they can continue to grow.

In this way, only mature mussels enter the processing line. Here, they are either packed fresh or cooked for freezing or packaging in jars and tins. Proteins left behind in the cooking water are then extracted and used as a flavouring.

Partnership for recycling shells

The biggest side stream from production is the 20,000 tonnes of shells that accumulate every year. Years ago, these shells were disposed of at the nearest municipal waste depot.

Today, Vilsund Blue is committed to recycling the shells, which are now used in a multitude of applications, such as low-CO2 building materials, household insulation or surfaces for horse riding arenas.

In 2018, Vilsund Blue joined long-term partner Fredsø Logistik in establishing Vilsund Shells to manage what has now become an innovative business instead of an expense.

This no-waste approach means international customers can buy delicious and healthy shellfish of premium quality – and they can do so knowing that the supplier is a sustainable operation from cradle to gate.