To season a hand-forged Viking pan, first clean it thoroughly with warm water and dry it completely. Then, apply a very thin layer of a high-heat oil, such as sunflower, rapeseed, linseed, or peanut oil, and heat the pan on the stovetop or in the oven until the oil smokes and polymerizes. This process should be repeated two to three times for a stable patina. For regular maintenance after cleaning with water, always rub the pan thinly with one of the aforementioned vegetable oils or, alternatively, with clarified butter to protect it from rust and maintain its non-stick properties.