Muddle the strawberries in a shaker.
Add light rum, strawberry liqueur, lemon juice, and simple syrup.
Fill the shaker with ice and shake.
Strain into a glass and top with champagne.
Stir gently and garnish.
Simple syrup is made with equal parts sugar and water (1:1).
My Bar Shelf läser ditt skåp och visar varje cocktail du kan göra av det du redan har – inklusive Jayne Mansfield.