In northern Jutland is the scenic Rebild hills. In the lowlands of the hills you will find springs whose water has flowed undisturbed into the subsoil for decades.
The water is forced up to the ground surface by the high pressure from the hills and runs the short undisturbed path down to the ponds where the fish have their upbringing.
In this always clean cool water, the fish are never exposed to heat waves, algae blooms or pollutants, which give an ugly bee taste or be the cause of diseases.
The cool water, on the other hand, gives a slower growth and firmer meat.