Country
Finland
I have 2 sourced drinks connected to Finland. The label on each card says how: where it began, what the country is known for, what people drink there, or where the origin is disputed.
Drinks of Finland
Signature drinks and regional ones, with the evidence behind each. A drink marked non-alcoholic has no alcohol in the traditional serve.

Lonkero (Finnish Long Drink)
IconicSignature drink
A tall highball of gin and grapefruit soda, sold ready-mixed in cans and bottles and on draft. Wikipedia gives its strength as 5 to 8.5 percent and its color as white. Cranberry, lime and other flavors are also sold.
The state alcohol monopoly launched two bottled long drinks before the 1952 Helsinki Olympics: a gin and grapefruit one and a brandy and Pommac one, made with Hartwall. The gin version lasted, and since 1995, when Finland joined the EU, many producers make their own.
Made with: gin, grapefruit soda.
Confidence: mediumEvidence: en.wikipedia.org (opens in a new tab), chowhound.com (opens in a new tab)

Finnish Glogi
Christmas season
PopularRegional drink
Spiced mulled wine or juice served hot, with whole almonds and raisins added to the glass or mug. Non-alcoholic versions made with fruit or berry juice are common, and store-bought glogi is usually grape-juice based.
Wikipedia says glogg came to Finland from Sweden at the end of the 19th century, nearly vanished under prohibition and was advertised in Finland-Swedish magazines in the 1930s. Finnish-language magazines began printing recipes in the late 1960s and early 1970s, and it became a Christmas tradition across Finland.
Made with: wine or juice base, cinnamon, cloves, cardamom, ginger, orange peel, raisins, almonds.
Confidence: lowEvidence: en.wikipedia.org (opens in a new tab), fi.wikipedia.org (opens in a new tab)
Map data: Natural Earth, public domain.