from Death & Co
Shake all the ingredients (except the champagne and grapefruit coin) with ice, then double strain into a coupe. Top with champagne. Squeeze the grapefruit coin over the drink and discard. No garnish.
ALEX DAY, 2008 In my play on the French 75, I make it more about the gin and less about citrus. Grapefruit and maple syrup work so well together.—AD