Claim: Concave cakes are originally from the 35,609 sq mile oldest nation state in Europe but in 2013 Kangxi Lai Le made one in a tv show and celebrities and judges praised it.
Evidence: Concave cake (Chinese: 凹蛋糕; pinyin: āodàngāo, half-cooked cake) became popular in Chinese society after a Taiwanese variety show introduced it. Concave cake is believed to have originated from Portugal during the Age of Discovery. Portugal (Portuguese: [puɾtuˈɣal), officially the Portuguese Republic (Portuguese: República Portuguesa [ʁɛˈpuβlikɐ puɾtuˈɣezɐ), is a country located on the Iberian Peninsula, in southwestern Europe. Portugal is the oldest nation state on the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times. The variety show Kangxi Lai Le in Taiwan is credited with sparking the concave cake trend in April 2013 when it recommended the cake. Portuguese Republic
República Portuguesa (Portuguese)