Adapted from a recipe in the Franny's cookbook, this bittersweet and bubbly drink calls on mint and lime to balance out the intensity of Cynar, an artichoke-based aperitif.
Note: To make mint simple syrup, bring ½ cup water and ½ cup sugar to a boil. Add ¼ cup mint leaves (about 20 leaves) and allow to steep for 3 hours, or overnight. Strain and discard leaves. Syrup will keep, refrigerated, for up to two weeks.