ramune

A carbonated soft drink sold in Japan, typically in "Codd-neck bottles":[https://en.wikipedia.org/wiki/Codd-neck_bottle], which use a glass marble as a stopper to keep the drink carbonated. The original formula is lemon-lime; nowadays there are many other flavors as well. At least one manufacturer labels it "Ramuné" for the North American market, indicating how it's meant to be pronounced.