Step 1

Up to 2 days before serving, pour gin, Aperol, and simple syrup into a 2-quart pitcher and stir to mix. If not serving immediately, seal well, covering with plastic wrap if needed, and refrigerate.

Step 2

Up to 2 hours before serving, squeeze lemon and grapefruit juices and stir into pitcher mix. Reseal and return to refrigerator if not serving immediately.

Step 3

To serve, fill pitcher with ice and stir gently until outside of pitcher is cool. Carefully add chilled sparkling wine to pitcher, along with citrus wedges, and stir gently once more. Taste for balance, adding up to 2 tablespoons lemon juice, if desired. Pour immediately into ice-filled rocks glasses and serve.