Sidecar (sparkling water)
A sidecar is a term for a small glass of sparkling water or seltzer served beside an espresso.The purpose of the water is to cleanse a person's palate before and after drinking an espresso shot. It is commonly associated with third-wave coffee and may be served by default alongside an order of espresso.Additionally there is also an espresso sidecar, which refers to a shot of espresso that is served alongside a cafe latte or cappuccino. In 2016, Starbucks launched a specialty beverage at some of their locations that included a beer, with an espresso sidecar meant to be poured into the beer.