Country
One drink is tied to South Korea. The label on each says how: where it began, what the country is known for, what people drink there, or where the origin is disputed.
Associations are editorial judgements. The evidence link shows the source used.
Somaek is a South Korean word and a South Korean habit: soju and maekju, beer, poured together, often around three parts to seven. The sources reachable this session are tertiary, a Wikipedia entry citing Reuters and The New York Times and a food site that credits office workers without evidence, so the confidence is low even though no other country claims it. The Cambridge University Press history of soju, fetched for the dossier, covers the spirit but not the mix.
Confidence: lowEvidence: en.wikipedia.org (opens in a new tab)
Map data: Natural Earth, public domain.