Combine 1 cup sour cherry juice, 3/4 cup sugar and 1/2 cup water in a medium skillet; cook over medium-high heat until syrupy, about 15 minutes. Stir in 1 teaspoon almond extract; let cool. Add seltzer.
For each drink, combine 2 to 4 tablespoons flavored syrup with 1 cup cold seltzer in an ice-filled glass.
Photograph by Charles Masters