1/2 cup light agave nectar
1 (3-inch) piece fresh ginger, peeled and finely chopped
1 cup water
1/2 cup Ginger Syrup
3 cups sparkling water
Make the syrup: Place agave nectar, ginger, and water in a small saucepan and bring to a boil over medium-high heat. Reduce heat to simmer, cover, and cook until ginger aroma and flavor is strong, about 1 hour. Let cool. Strain and refrigerate for up to 1 week.
Make the soda: In a pitcher, combine 1/2 cup syrup with the water. Pour over ice.
Makes 2/3 cup ginger syrup; 3 1/2 cups soda.