noun
soda float
A drink made by adding a scoop of ice cream to a carbonated soft drink, typically served in a tall glass.
暑い日にはソーダフロートが飲みたくなる。
On a hot day, I feel like having a soda float.
あのカフェのソーダフロートはバニラアイスがたっぷり入っている。
The soda float at that café has plenty of vanilla ice cream in it.