1TBhomemade elderberry syrup* Store-bought syrup will also work but it's very pricey.
fresh herb garnishlike thyme or mint, optional
Pour the sparkling water into a glass, followed by the elderberry syrup and lime juice. Stir the soda to combine the ingredients. Top the soda off with ice and an herb garnish (thyme or mint) if you want to feel fancy. Mint will add a minty flavor to the soda.