To make ginger soda: Fill glasses 1/3rd full with syrup and add a generous squeeze of fresh lemon or lime juice. Fill the glasses with ice then top with sparkling water or tonic water (or a not-too-sweet citrus soda). Stir gently to mix the ingredients and garnish with a round of citrus or fresh mint.
Other Uses: You could also make a terrific cocktail with this as a base, using bourbon, whiskey, or rum. Another possibility is to use a few spoonfuls of this syrup to sweeten iced tea or drizzle over a fruit salad.