ラムネ
ラムネ
ramune
= a Japanese carbonated soft drink sold in a distinctive bottle sealed with a glass marble
Ramune is the soft drink most immediately associated with Japanese summer festivals — its iconic Codd-neck bottle, sealed with a glass marble that must be pushed in to open it, makes drinking it an interactive ritual unlike any other. The lemon-lime flavor and playful bottle design have made it a lasting symbol of nostalgic Japanese summer.
Ramune (ラムネ) is a carbonated soft drink that takes its name from the English word ‘lemonade,’ adapted through Japanese phonology (lemonade → ramune). Its signature feature is the Codd-neck bottle: a glass bottle sealed by a glass marble pressed into a rubber washer at the neck. To open it, you use a plastic plunger included with the bottle to push the marble inward, releasing the carbonation with a satisfying pop. The marble then rattles inside the bottle while you drink. The original and most common flavor is lemon-lime, though dozens of regional and seasonal flavors — strawberry, melon, blue Hawaii, and even curry — are produced for novelty.
When opening a ramune bottle for the first time, press the plunger firmly and quickly — hesitating causes soda to overflow. Keep the bottle upright immediately after opening to prevent the marble from blocking the neck hole, which stops the flow of liquid. The glass marble inside cannot be extracted through the bottle opening, which has made collecting regional ramune bottles a minor hobby in Japan. Ramune is not typically consumed year-round — it peaks dramatically during summer festival (matsuri) season from June through August, when it’s sold at yatai stalls alongside yakisoba and takoyaki.
Everyday use
祭りでラムネを飲むのが毎年の楽しみだ。
Matsuri de ramune wo nomu no ga maitoshi no tanoshimi da.
Drinking ramune at the festival is something I look forward to every year.
Casual / Social Media
ラムネの瓶を開けるとき、ビー玉を押し込むんだよ。
Ramune no bin wo akeru toki, bii-dama wo oshikomu n da yo.
When you open a ramune bottle, you push the marble in.
Formal / Cultural context
最近はメロン味やイチゴ味のラムネも売っているよ。
Saikin wa melon aji ya ichigo aji no ramune mo utte iru yo.
These days they sell ramune in melon and strawberry flavors too.
Ramune was introduced to Japan in 1872 by a Scottish pharmacist named Alexander Cameron Sim, who began selling carbonated lemonade in Kobe. The Codd-neck bottle design — invented in Britain in 1872 by Hiram Codd — was adopted because it kept carbonation better than cork, and the self-sealing marble mechanism fascinated Japanese consumers. By the Meiji and Taisho eras, ramune had become a popular summer drink sold by street vendors, particularly at outdoor festivals and temple fairs. The drink became so culturally embedded that its bottle shape and sound are immediately recognizable to anyone who grew up in Japan.
Today, ramune occupies a specific nostalgic space in Japanese culture — it is less an everyday beverage than a seasonal ritual object. The sight and sound of the marble hitting glass, the foam rising after the plunger push, and the shared experience of opening the bottle together are experiences many Japanese adults connect to childhood summers and festival outings. Regional ramune producers across Japan create locally specific flavors for tourists: wasabi ramune from Shizuoka, soy sauce ramune from Kyoto, and kimchi ramune from Osaka exist as novelty items that blur the line between beverage and souvenir.