Ramune can be found at most Asian supermarkets. There are many different flavors, in addition to the original flavor. Ramune refers to the type of bottle with carbonated soda, and is manufactured by various companies.
Ramune (ラムネ) is a carbonated soft drink originally sold in Japan which was introduced in Kobe by Alexander Cameron Sim, a Scottish-born pharmacist and entrepreneur. Ramune is widely known for the distinctive design of its bottle, often called Codd-neck bottles after the inventor, Hiram Codd. They are made of glass and sealed with a marble; the codd head is held in place by the pressure of the carbonation in the drink. To open the bottle, a device to push the marble inward is provided. The marble is pushed inside the neck of the bottle where it rattles around while drinking. Therefore, the drinks are sometimes called “marble soda” outside of Japan. Ramune is one of the modern symbols of summer in Japan and is widely consumed during warm festival days and nights. (Wikipedia)