They say that the best way to a man’s heart is through his stomach, and South Korea appears to be trying to woo North Korean leader Kim Jong-un by serving him a childhood Swiss potato dish at a landmark summit this Friday.

Kim Jong-un is said to have studied in Switzerland, most likely as a teenager of 15-17 years old between 1998 and 2000, although this has never been officially confirmed.

The fried potato dish of rösti appears designed to bring back warm memories of more carefree days when he reportedly lived with his aunt Ko Yong Suk under the pseudonym Pak Un and attended the Liebefeld-Steinhölzli school in Bern.

His younger sister, Kim Yo Jong is said to have joined him, under the alias Pak Mi Hyang, and former classmates told the Washington Post that she enjoyed ballet lessons and Mr Kim loved basketball.

Friday’s summit will be the first between the two Koreas since 2007 and in many ways is a political coup for South Korean President Moon Jae-in who has advocated closer relations with Pyongyang since his election last year.