noun
melon soda
A sweet, melon-flavored carbonated soft drink, often bright green in color. Common in Japan at kissaten, family restaurants, and as a float with ice cream.
from English melon soda
喫茶店でメロンソーダを頼んだ。
I ordered a melon soda at the coffee shop.
メロンソーダにアイスクリームを浮かべると、クリームソーダになる。
If you float ice cream on melon soda, it becomes a cream soda.