club soda

US /ˈklʌb ˌsoʊ.də/
UK /ˈklʌb ˌsoʊ.də/
"club soda" picture
1.

a carbonated beverage, often with added minerals, used as a mixer or drunk on its own

:
I'll have a gin and club soda, please.
She prefers drinking plain club soda over sugary drinks.