01 - In a cocktail shaker or sturdy glass, muddle the diced pear with lemon juice and one sprig of rosemary until the pear is crushed and aromatic.
02 - Add ginger syrup and a handful of ice cubes; shake or stir thoroughly to blend flavors.
03 - Strain the mixture evenly into two glasses filled with fresh ice cubes.
04 - Top each glass with chilled sparkling water and gently stir to combine.
05 - Finish with a rosemary sprig, a thin pear slice, and a twist of lemon peel. Serve immediately.