Floral honey, fresh herbs, and verdant green-tea powder make for an effervescent springtime sipper.
Whisk together first 3 ingredients in a small bowl until matcha powder dissolves. Let cool completely.
Muddle mint leaves in the bottom of a cocktail shaker. Add matcha mixture, and fill shaker with ice; shake 30 seconds. Strain into 2 Champagne flutes. Top evenly with Champagne. Garnish, if desired.