The liver oil refinery was built in 1949 and served all the five fish factories that had been rebuilt in Berlevåg after the war. The two storey building, measuring 11m x 7.6m, has a pitched roof and the ground floor has an extension with a monopitch roof. The external walls and an internal load bearing wall are made of concrete. The intermediate floor has wooden joists and the roof wooden purlins and rafters. The windows have one, two or three casements each with linked casements on the inside. The lower parts of the external walls are painted light blue and the upper white. Sheets of corrugated fiber cement cover the roof. On the north wall wooden stairs lead up to the main entrance.

The ground floor consists of two rooms: one for tapping and the other for storing the liver oil. The first floor is partitioned crossways in the middle and the liver was brought through a gate in the gable into the eastern upstairs room. The oil was extracted in conical vats partly set into the floor. Next door is the steam boiler connected to the vats with pipes via the ceiling.

The oil was refined according to what is known as the Finnmark Method. The plant could be run by just one person while other methods required two people. First thing in the morning the boiler was lit. The already cleaned and rinsed liver was then hoisted up from the ground floor and poured into the vats. After about an hour the steam would be let in at the bottom of the vats. This heated the mass of livers quickly and after about half an hour the oil had gathered at the top of the vats. The oil was decanted via a pipe from the middle of the vat into storage tanks and later transferred to barrels for transportation. The remaining mass of liver was transferred to a separator and a lower quality of oil extracted. The best quality oil was used for medicinal purposes, the rest had a large variety of uses. The liver oil refinery is no longer in use.