Potait is considered Svalbard's national food in the Series Nordia. It is made of Potatoes and Fish Bait, usually with butter and Norwegian salmon in the middle. It is first mentioned in the 1st Episode when Svalbard and Norway are in the Norwegian hut. It is first mentioned about mid-way through the script of "Pilot".
During a conversation between Svalbard and Mother Russia, Svalbard shows her love to the dish, also mentioning subtly by the way that she does not like Putin.