Japanese Highball
Whisky and soda, built with care over clear ice
Japanese whisky and chilled soda water built over large clear ice in a frosted highball glass, at roughly one part whisky to three or four parts soda, with an optional lemon peel.
Country
One drink is tied to Japan. 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.
Whisky and soda is not a Japanese invention, but the Japanese highball is a Japanese style: Suntory launched Kakubin in 1937 as a lighter blend suited to Japanese food, after its smoky 1929 Shirofuda sold poorly. The 2008 Suntory campaign that revived the Kaku highball, reported in the Oxford Companion and summarized on Wikipedia, is not on this Difford's page, so the relation is iconic rather than origin. Technique, ice and ratio are the Japanese contribution.
Confidence: mediumEvidence: diffordsguide.com (opens in a new tab)
Map data: Natural Earth, public domain.